Exhibit 10(a)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form N-1A of BlackRock ETF Trust of our report dated September 24, 2019, relating to the financial statements and financial highlights, which appears in BlackRock U.S. Equity Factor Rotation ETF’s Annual Report on Form N-CSR for the year ended July 31, 2019. We also consent to the references to us under the headings “Financial Highlights”, “Financial Statements” and “Independent Registered Public Accounting Firm” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

November 22, 2019