Exhibit 24.1

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Chairman, Chief Executive Officer and President of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Chief Financial Officer and Senior Vice President of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Controller and Vice President of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 26^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.

POWER OF ATTORNEY OF IBM DIRECTOR

KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Director of International Business Machines Corporation, a New York corporation (the “Corporation”), which is to file with the Securities and Exchange Commission (the “SEC”) one or more Registration Statements on Form S-8, or other appropriate Form under the Securities Act of 1933, for the shares of capital stock of the Corporation or other interests issuable under the IBM 2026 Long-Term Performance Plan, hereby constitute and appoint Arvind Krishna, James J. Kavanaugh, Anne Robinson, Nicolas Fehring, Brien Wierzchowski and Jane P. Edwards and each of them, as my true and lawful attorneys-in-fact and agents, with full power to act, together or each without the others, for me and in my name, place and stead, in any and all capacities, to sign, or cause to be signed electronically any and all of said Registration Statements (which Registration Statements may constitute post-effective amendments to registration statements previously filed with the SEC), and any and all amendments to the aforementioned Registration Statements, and to file said Registration Statements and amendments thereto so signed with all exhibits thereto, with any and all other documents in connection therewith with the SEC, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as I might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. This Power of Attorney may only be revoked by a written document executed by the undersigned that expressly revokes this power by referring to the date and subject hereof.

IN WITNESS WHEREOF, I, the undersigned, have executed this Power of Attorney as of this 27^th day of April 2026.