Nasdaq (NDAQ) S-8 Registration of securities for employees

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (FormS-8No. 333-                ) pertaining to the Nasdaq, Inc. Equity Incentive Plan of our reports dated February 28, 2018, with respect to the consolidated financial statements and schedule of Nasdaq, Inc. and the effectiveness of internal control over financial reporting of Nasdaq, Inc. included in its Annual Report (Form10-K) for the year ended December 31, 2017, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

New York, New York

May 25, 2018