Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the reference to our firm under the caption “Experts” in the Post-effective Amendment No. 2 to the Registration Statement (FormS-3) and related Prospectus of Achaogen, Inc. for the registration of common stock, preferred stock, debt securities, warrants and units and to the incorporation by reference therein of our reports dated February 27, 2018, with respect to the consolidated financial statements of Achaogen, Inc., and the effectiveness of internal control over financial reporting of Achaogen, 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
Redwood City, California
February 27, 2018
