Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements, as listed below, of Atlantic Union Bankshares Corporation and in the related Prospectuses, where applicable, of our reports dated February 22, 2024, 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 this Annual Report (Form 10-K) of Atlantic Union Bankshares Corporation for the year ended December 31, 2023.

Registration Statement Numbers

Form

Description

333-248544

Form S-3

Common Stock, Preferred Stock, Debt Securities, Warrants, Purchase Contracts, Units

333-102012

Form S-3

Common stock

333-81199

Form S-3

Common stock

333-255994

Form S-8

Atlantic Union Bankshares Corporation Stock and Incentive Plan (as

amended and restated effective May 4, 2021)

333-203580

Form S-8

Union Bankshares Corporation Stock and Incentive Plan

333-193364

Form S-8

FNB Corporation 2000 Incentive Stock Plan, FNB Corporation 2006 Incentive Stock Plan, StellarOne Corporation Stock Incentive Plan and StellarOne Corporation Stock and Incentive Compensation Plan

333-175808

Form S-8

Union First Market Bankshares Corporation 2011 Stock Incentive Plan

333-113842

Form S-8

Union Bankshares Corporation Non-Employee Directors’ Stock Plan

333-113839

Form S-8

Union Bankshares Corporation 2003 Stock Incentive Plan

333-228455

Form S-8 via post-effective amendment to Form S-4

Access National Corporation 2017 Equity Compensation Plan and Access National Corporation 2009 Stock Option Plan

/s/ Ernst & Young LLP

Richmond, Virginia

February 22, 2024