Exhibit 23(a)

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” in this Registration Statement (Form S-3) and related Prospectus of McDonald’s Corporation for the registration of debt securities, preferred stock, and common stock, and to the incorporation by reference therein of our reports dated February 23, 2018, with respect to the consolidated financial statements of McDonald’s Corporation, and the effectiveness of internal control over financial reporting of McDonald’s Corporation, included in its Annual Report (Form 10-K) for the year ended December 31, 2017, filed with the Securities and Exchange Commission.

/s/ Ernst & Young

Chicago, Illinois

July 27, 2018