Exhibit 23(d)
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Post-Effective Amendment No. 1 to Registration
Statement No. 333-131143 of Huntington Bancshares Incorporated on Form S-3 of our reports dated February 21, 2007, relating to the
consolidated financial statements of Huntington Bancshares Incorporated (which report expresses an
unqualified opinion and includes an explanatory paragraph related to the adoption of Statement of
Financial Accounting Standards (SFAS) No. 123(R), Share-Based Payment, SFAS No. 156, Accounting
for Servicing of Financial Assets, and SFAS No. 158, Employers Accounting for Defined Benefit
Pension and Other Postretirement Plans, in 2006), and managements report on the effectiveness of
internal control over financial reporting incorporated by reference in the Annual Report on Form
10-K of Huntington Bancshares Incorporated for the year ended December 31, 2006, and to the
reference to us under the heading Experts in the Prospectus, which is part of this Registration
Statement.
Deloitte & Touche LLP
Columbus, Ohio
May 7, 2007