Dycom Industries (DY) S-8 Registration of securities for employees

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED CERTIFIED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated September 1, 2017 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in Dycom Industries, Inc.’s Annual Report on Form 10-K for the year ended July 29, 2017.

/s/ PricewaterhouseCoopers LLP

Fort Lauderdale, Florida

November 22, 2017