Certification of No Change in Definitive Materials. (497j)

June 9, 2020

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549-4720



Re:	American Century ETF Trust (the “Registrant”)
	1933 Act File No. 333-221045, Post-Effective Amendment No. 52 and
	1940 Act File No. 811-23305, Amendment No. 54 (collectively, the “Amendment”)

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended (the “Act”), the undersigned hereby certifies that the form of prospectus and statement of additional information that would have been filed under paragraph (b) or (c) of Rule 497 of the Act with respect to the above-referenced issuer would not have differed from that contained in the most recent registration statement amendment, the text of which has been filed electronically.

If there are any questions or comments regarding this filing, please contact the undersigned at (816) 340-3275.

Sincerely,

/s/ Ashley L. Bergus

Ashley L. Bergus

Assistant Secretary