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 our report dated March 1, 2010 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in Harmonic Inc.’s Annual Report on Form 10-K for the year ended December 31, 2009.

/s/ PricewaterhouseCoopers LLP  

PricewaterhouseCoopers LLP 

San Jose, California

September 21, 2010