Prospectus Certification by Investment Company (Form 497J)

111 Huntington Avenue, Boston, Massachusetts 02199

617-954-5000

July 1, 2026

VIA EDGAR

United States Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Re: MFS^® Active Exchange Traded Funds Trust (the "Trust") (File Nos. 333-278691 and 811-23953) on behalf of MFS^® Active Core Plus Bond ETF, MFS^® Active Growth ETF, MFS^® Active Intermediate Muni Bond ETF, MFS^® Active International ETF, MFS^® Active Mid Cap ETF, MFS^® Active Value ETF, MFS^® Blended Research^® Core Equity ETF, MFS^® Blended Research^® Emerging Markets Equity ETF, and MFS^® Blended Research^® International Equity ETF (the "Funds")

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, please accept this letter on behalf of the Trust as certification that the Prospectuses and the combined Statement of Additional Information for the Funds do not differ from those contained in Post-Effective Amendment No. 11 (the "Amendment") to the Trust's Registration Statement on Form N-1A. The Amendment was filed electronically on June 25, 2026.

Please call the undersigned at (617) 954-5843 or Antoine del Alamo at (617) 954-4586 with any questions you may have.

Sincerely,

/s/BRIAN E. LANGENFELD

Brian E. Langenfeld

Vice President and Managing Counsel