Exhibit 23.1

CONSENT OF ERNST & YOUNG LLP, 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 Cytokinetics, Incorporated for the registration of Common Stock, Preferred Stock, Debt Securities, and Warrants, and to the incorporation by reference therein of our reports dated March 6, 2019, with respect to the consolidated financial statements of Cytokinetics, Incorporated, and the effectiveness of internal control over financial reporting of Cytokinetics, Incorporated, included in its Annual Report (Form 10-K) for the year ended December 31, 2018, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Redwood City, CA

May 9, 2019