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09/30/2025 | Press release | Distributed by Public on 09/30/2025 10:15

Prospectus Certification by Investment Company (Form 497J)

September 30, 2025

VIA ELECTRONIC FILING

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: Division of Investment Management

RE: BlackRock Commodity Strategies Fund, a series of BlackRock FundsSM

Post-Effective Amendment No. 1278 to the Registration Statement on Form N-1A

(Securities Act File No. 33-26305, Investment Company Act File No. 811-05742)

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended (the "1933 Act"), BlackRock FundsSM (the "Registrant"), on behalf of its series BlackRock Commodity Strategies Fund (the "Fund"), hereby certifies that:

(1) the form of Prospectuses and Statement of Additional Information that would have been filed pursuant to Rule 497(c) under the 1933 Act would not have differed from that contained in Post-Effective Amendment No. 1278 to the Registration Statement on Form N-1A of the Registrant with respect to the Fund; and

(2) the text of Post-Effective Amendment No. 1278 to the Registration Statement on Form N-1A of the Registrant with respect to the Fund was filed electronically with the Securities and Exchange Commission on September 25, 2025.

Sincerely,
BlackRock FundsSM

/s/ Janey Ahn

Janey Ahn

Secretary of the Registrant

Blackrock Funds published this content on September 30, 2025, and is solely responsible for the information contained herein. Distributed via SEC EDGAR on September 30, 2025 at 16:15 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]