Exhibit 23

Consent of Independent Registered Public Accounting Firm

The Trustees and Shareholders

Lexington Realty Trust:

We consent to the incorporation by reference in the registration statements on Form S-3 (File Nos. 333-157860, 333-183645 and 333-182534), and on Form S-8 (File No. 333-175618) of Lexington Realty Trust of our reports dated February 28, 2012, with respect to the consolidated balance sheets of Lexington Realty Trust and subsidiaries as of December 31, 2012 and 2011, and the related consolidated statements of operations, comprehensive income (loss), changes in equity, and cash flows for each of the years in the three-year period ended December 31, 2012, and the related financial statement schedule, and the effectiveness of internal control over financial reporting as of December 31, 2012, which reports appear in the December 31, 2012 annual report on Form 10-K of Lexington Realty Trust.

(signed) KPMG LLP

New York, New York

February 25, 2013