CERTIFICATION
PURSUANT TO RULE 30a-2(a) UNDER THE 1940 ACT AND SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002
I, John M. Perlowski, Chief
Executive Officer (principal executive officer) of BlackRock Series Fund, Inc.,
certify that:
1.
I have reviewed this report on Form N-CSR of BlackRock
Series Fund, Inc.;
2.
Based on my knowledge, this report does not contain
any untrue statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the circumstances under
which such statements were made, not misleading with respect to the period
covered by this report;
3.
Based on my knowledge, the financial statements,
and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations, changes in
net assets, and cash flows (if the financial statements are required to include
a statement of cash flows) of the registrant as of, and for, the periods presented
in this report;
4.
The registrant's other certifying officer(s) and I
are responsible for establishing and maintaining disclosure controls and
procedures (as defined in Rule 30a-3(c) under the Investment Company Act of
1940) and internal control over financial reporting (as defined in Rule
30a-3(d) under the Investment Company Act of 1940) for the registrant and have:
a)
designed such disclosure controls and procedures,
or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this report is being
prepared;
b)
designed such internal control over financial
reporting, or caused such internal control over financial reporting to be
designed under our supervision, to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements
for external purposes in accordance with generally accepted accounting
principles;
c)
evaluated the effectiveness of the registrant's
disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of a date
within 90 days prior to the filing date of this report based on such
evaluation; and
d)
disclosed in this report any change in the registrant's
internal control over financial reporting that occurred during the period
covered by this report that has materially affected, or is reasonably likely to
materially affect, the registrant's internal control over financial reporting;
and
5.
The registrant's other certifying officer(s) and I
have disclosed to the registrant's auditors and the audit committee of the registrant's
board of directors (or persons performing the equivalent functions):
a)
all significant deficiencies and material
weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the registrant's
ability to record, process, summarize, and report financial information; and
b)
any fraud, whether or not material, that involves
management or other employees who have a significant role in the registrant's
internal control over financial reporting.
Date: August 19, 2025
/s/
John M. Perlowski
John
M. Perlowski
Chief
Executive Officer (principal executive officer) of
BlackRock Series Fund, Inc.
CERTIFICATION
PURSUANT TO RULE 30a-2(a) UNDER THE 1940 ACT AND SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002
I, Trent Walker, Chief Financial Officer
(principal financial officer) of BlackRock Series Fund, Inc., certify that:
1.
I have reviewed this report on Form N-CSR of BlackRock
Series Fund, Inc.;
2.
Based on my knowledge, this report does not contain
any untrue statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the circumstances under
which such statements were made, not misleading with respect to the period
covered by this report;
3.
Based on my knowledge, the financial statements,
and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations, changes in
net assets, and cash flows (if the financial statements are required to include
a statement of cash flows) of the registrant as of, and for, the periods presented
in this report;
4.
The registrant's other certifying officer(s) and I
are responsible for establishing and maintaining disclosure controls and
procedures (as defined in Rule 30a-3(c) under the Investment Company Act of
1940) and internal control over financial reporting (as defined in Rule
30a-3(d) under the Investment Company Act of 1940) for the registrant and have:
a)
designed such disclosure controls and procedures,
or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this report is being
prepared;
b)
designed such internal control over financial
reporting, or caused such internal control over financial reporting to be
designed under our supervision, to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements
for external purposes in accordance with generally accepted accounting
principles;
c)
evaluated the effectiveness of the registrant's
disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of a date
within 90 days prior to the filing date of this report based on such
evaluation; and
d)
disclosed in this report any change in the registrant's
internal control over financial reporting that occurred during the period
covered by this report that has materially affected, or is reasonably likely to
materially affect, the registrant's internal control over financial reporting;
and
5.
The registrant's other certifying officer(s) and I
have disclosed to the registrant's auditors and the audit committee of the registrant's
board of directors (or persons performing the equivalent functions):
a)
all significant deficiencies and material
weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the registrant's
ability to record, process, summarize, and report financial information; and
b)
any fraud, whether or not material, that involves
management or other employees who have a significant role in the registrant's
internal control over financial reporting.
Date: August 19, 2025
/s/
Trent Walker
Trent
Walker
Chief
Financial Officer (principal financial officer) of
BlackRock Series Fund, Inc