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

EATON VANCE MUTUAL FUNDS TRUST

Two International Place

Boston, MA  02110

Telephone:  [phone]

CERTIFICATION

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, and Regulation S-T, Eaton Vance Mutual Funds Trust (the "Registrant") (1933 Act File No. 002-90946) certifies (a) that the forms of prospectus and statement of additional information used with respect to the following series of the Registrant, do not differ materially from those contained in Post-Effective Amendment No. 204 (“Amendment No. 204”) to the Registrant's Registration Statement on Form N-1A, and (b) that Amendment No. 204 was filed electronically with the Securities and Exchange Commission (Accession No. 0000940394-13-000762) on May 30, 2013:

Parametric Emerging Markets Fund

(formerly Eaton Vance Parametric Structured Emerging Markets Fund)

Parametric Global Small-Cap Fund

Parametric International Equity Fund

(formerly Eaton Vance Parametric Structured International Equity Fund)

EATON VANCE MUTUAL FUNDS TRUST

By:   /s/ Maureen A. Gemma

      Maureen A. Gemma, Esq.

      Secretary

Date:  June 3, 2013

015_0542