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November 3, 2000
VIA EDGAR
Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, NW
Washington, DC 20549
Re: MFS(R)Institutional Trust (the "Trust") (File Nos. 33-37615 and
811-6174) on Behalf of: MFS(R)Institutional Global Fixed Income
Fund ("MWF") MFS(R)Institutional High Yield Fund ("IHY")
MFS(R)Institutional Core Equity Fund ("ICE") MFS(R)Institutional
Research Fund ("IRF") MFS(R)Institutional Large Cap Growth Fund
("ILC") MFS(R)Institutional Mid Cap Growth Fund ("IMC")
MFS(R)Institutional Emerging Equities Fund ("MEE")
MFS(R)Institutional International Equity Fund ("IIE")
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
Prospectus and Statement of Additional Information for the Trust do not differ
from those contained in Post-Effective Amendment No. 20 (the "Amendment") to the
Trust's Registration Statement on Form N-1A. The Amendment was filed
electronically on October 27, 2000 for MWF, IRF, IMC, MEE, IIE, IHY, ICE and
ILC.
Please call the undersigned or Nicole Leonard at (800) 343-2829 with any
questions you may have.
Very truly yours,
HEATHER R. GIROLAMO
Heather R. Girolamo
Associate Counsel
HRG/bjn
