The OLB Group, Inc. (OLB) S-1/A IPO registration (amended)

Exhibit 23.1

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the inclusion in this Registration Statement of The OLB Group, Inc. on Amendment No. 9 to Form S-1 (File No. 333-232368) of our report dated April 29, 2020 with respect to our audits of the consolidated financial statements of The OLB Group, Inc. and Subsidiaries as of December 31, 2019 and 2018 and for each of the two years in the period ended December 31, 2019, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.

/s/ Marcum LLP

Marcum LLP

New York, NY

July 27, 2020