Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of Zscaler, Inc.of our report dated September 16, 2021relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in Zscaler, Inc.’s Annual Report on Form 10-K for the year ended July 31, 2021.

/s/ PricewaterhouseCoopers LLP

San Jose, CaliforniaSeptember 16, 2021