Exhibit23-a
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in this Registration Statement (FormS-3 filed on or about May 13, 2019) and related Prospectus of AT&T Inc. (AT&T) for the registration of debt securities, preferred stock, depositary shares and common stock and to the incorporation by reference therein of our reports dated February 20, 2019, with respect to the consolidated financial statements of AT&T, and the effectiveness of internal control over financial reporting of AT&T, incorporated by reference in its Annual Report (Form10-K) for the year ended December 31, 2018 and the financial statement schedule of AT&T included therein, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Dallas, Texas
May 13, 2019
