Prospectus by Investment Company - Form 497

Filed Pursuant to Rule 497(e)
Registration No. 333-07305
1940 Act File No. 811-07685

FRONTIER FUNDS, INC.

Frontier MFG Global Equity Fund

Institutional Class Shares (FMGEX)

Service Class Shares (FMGSX)

Supplement dated May 1, 2024

to the Statement of Additional Information dated October 31, 2023

The Frontier MFG Global Equity Fund (the "Fund"), a series of Frontier Funds, Inc. (the "Company"), has been liquidated effective April 30, 2024. Accordingly, all references to the Fund in the Company's Statement of Additional Information are hereby eliminated.

Please retain this Supplement for future reference.

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