Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated March 1, 2019, relating to the consolidated financial statements of Roku, Inc. and subsidiaries (the Company) (which expresses an unqualified opinion and includes an explanatory paragraph related to the Companys change in method of accounting for revenue in fiscal year 2018 due to the adoption of Accounting Standards Codification 606), and the effectiveness of the Companys internal control over financial reporting, appearing in the Annual Report on Form 10-K of the Company for the year ended December 31, 2018, and to the reference to us under the heading Experts in the Prospectus, which is part of this Registration Statement.
/s/ DELOITTE & TOUCHE LLP
San Jose, California
March 12, 2019