Post-Effective Amendment to Post-Effective Amendment by Investment Company (Form 485BXT)

and/or

It is proposed that this filing will become effective:

If appropriate, check the following box:

This filing relates solely to the following fund, a series of ETF Opportunities Trust: IDX Alternative FIAT ETF

This Post-Effective Amendment to the Registration Statement on Form N-1A is filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating September 19, 2025 as the new effective date for Post-Effective Amendment No. 300 to the Registration Statement filed on June 25, 2025 for the IDX Alternative FIAT ETF. This Post-Effective Amendment incorporates by reference the Prospectus, Statement of Additional Information, and Part C contained in Post-Effective Amendment No. 300 to the Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the "Securities Act"), and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) of the Securities Act and has duly caused this Post-Effective Amendment No. 369 to the Registrant's Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Richmond, Commonwealth of Virginia on the 5th day of September, 2025.

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment No. 369 to the Registration Statement on Form N-1A has been signed below by the following persons in the capacities and on the dates indicated.

*Attorney-in-fact pursuant to Powers of Attorney