The RBB Fund, Inc.

615 East Michigan Street

Milwaukee, Wisconsin 53202

January 16, 2024

VIA EDGAR TRANSMISSION

U.S. Securities and Exchange Commission

Department of Investment Management

100 F. Street, N.E.

Washington, D.C. 20549

Re:       
The RBB Fund, Inc. (the “Company”) File Nos.: 033-20827 and 811-05518 F/m 6-Month Investment Grade Corporate Bond ETF, F/m 9-18 Month Investment Grade Corporate Bond ETF, F/m 2-Year Investment Grade Corporate Bond ETF, F/m 3-Year Investment Grade Corporate Bond ETF, F/m 5-Year Investment Grade Corporate Bond ETF, F/m 7-Year Investment Grade Corporate Bond ETF, F/m 10-Year Investment Grade Corporate Bond ETF, F/m 20-Year Investment Grade Corporate Bond ETF, F/m 30-Year Investment Grade Corporate Bond ETF, and F/m 15+ Year Investment Grade Corporate Bond ETF (collectively, the “Funds”)

Dear Sir or Madam:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, and pursuant to the Investment Company Act of 1940, as amended, and the regulations thereunder, the Company on behalf of the Funds hereby certifies that the forms of Prospectus and Statement of Additional Information that would have been filed under Rule 497(b) or (c) would not have differed from those contained in the most recent amendment for the Funds dated January 10, 2024, and filed electronically as Post-Effective Amendment No. 316 to the Company’s Registration Statement on Form N-1A.

If you have any questions or require further information, do not hesitate to contact the undersigned at edward.paz@usbank.com.

Sincerely,

/s/ Edward Paz    

Edward Paz

Assistant Secretary

cc:        
Steven Plump, The RBB Fund, Inc. James Shaw, The RBB Fund, Inc. Jillian Bosmann, Faegre Drinker Biddle & Reath LLP