Prospectus Certification by Investment Company (Form 497J)

Richard J. Coyle Partner

Chapman and Cutler LLP 320 South Canal Street Chicago, Illinois 60606 T 312.845.3724 [email protected]

January 22, 2025

U.S. Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549

Re:	Roundhill ETF Trust
		(Registration Nos. 333-273052; 811-23887)

Ladies and Gentlemen:

On behalf of Roundhill ETF Trust (the "Registrant"), in accordance with the provisions of Rule 497(j) of Regulation C under the Securities Act of 1933 (the "Securities Act"), this letter serves to certify that the recent amendment to the Registration Statement on Form N-1A (the "Registration Statement") for the Registrant for Roundhill Weekly T-Bill ETF, a series of the Registrant, does not differ from that which would have been filed pursuant to Rule 497(c) of the Securities Act. Post-Effective Amendment No. 133 was filed electronically with the Securities and Exchange Commission on January 22, 2025.

If we may cooperate with you in any way in the processing of this registration statement, please telephone the undersigned at (312) 845-3724.

	Very truly yours,
	Chapman and Cutler llp
	By:	/s/ Richard Coyle
		Richard Coyle

Enclosures

Public link

Please use the above public link if you want to share this noodl on another website.