Exhibit 23.1

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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We consent to the incorporation by reference in Registration Statement No. 333-12294 on Form S-8 of Bar Harbor Bankshares of our report dated June 25, 2026 appearing in this Annual Report on Form 11-K of Bar Harbor Bankshares 401(k) for the year ended December 31, 2025.

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/s/ Crowe LLP

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Chicago, Illinois

June 25, 2026