EXHIBIT 23.1

CONSENT OF REGISTERED INDEPENDENT PUBLIC ACCOUNTING FIRM

      We hereby consent to the incorporation by reference of our report dated December 11, 2019 relating to the consolidated financial statements of DLH Holdings Corp. (the “Company”) as of and for the years ended September 30, 2019 and 2018 included in this Annual Report on Form 10-K into the Company’s previously filed Registration Statements on Form(s) S-3 (File Nos. 333-215405, 333-217777, 333-184912, 333-74478 and 333-120423) and Form(s) S-8 (File Nos. 333-212702, 333-197374, 333-178830, 333-73426, 333-143951 and 333-225153).

/s/ WithumSmith+Brown, PC

New York, New York

December 11, 2019