Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-196529) pertaining to the NOW Inc. Long-Term Incentive Plan of our reports dated February 16, 2023, with respect to the consolidated financial statements of NOW Inc. and the effectiveness of internal control over financial reporting of NOW Inc. included in this Annual Report (Form 10-K) for the year ended December 31, 2022.