Atlantic Union Bankshares (AUB) POSASR Automatic shelf registration (post-effective amendment)

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” in this Post-Effective Amendment No. 1 to the Registration Statement (File No. 333-220398) and related Prospectus of Atlantic Union Bankshares Corporation for the registration of common stock, preferred stock, depositary shares, debt securities, warrants, purchase contracts, and units and to the incorporation by reference therein of our reports dated February 25, 2020, with respect to the consolidated financial statements of Atlantic Union Bankshares Corporation, and the effectiveness of internal control over financial reporting of Atlantic Union Bankshares Corporation, included in its Annual Report (Form 10-K) for the year ended December 31, 2019, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Richmond, Virginia

June 2, 2020