LEGG MASON SPECIAL INVESTMENT TRUST INC, 497J, 2000-08-07

LEGG MASON SPECIAL INVESTMENT TRUST INC
497J, 2000-08-07

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[logo] Legg Mason Wood Walker, Incorporated
100 Light Street, P.O. Box 1476, Baltimore, MD  21203-1476
410 o 539 o 0000



                                       August 7, 2000




Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street N.W.
Washington, DC  20549

Attention:  File Room

         Re:      Legg Mason Special Investment Trust, Inc.
                  1933 Act File No. 33-1271
                  1940 Act File No. 811-4451

Ladies and Gentlemen:

         Pursuant to Rule 497(j)  under the  Securities  Act of 1933,  we hereby
certify that the Prospectuses with respect to the  above-referenced  fund do not
differ  from those filed in  Post-Effective  Amendment  No. 21,  which was filed
electronically on July 25, 2000.

                                       Very truly yours,

                                       LEGG MASON SPECIAL INVESTMENT TRUST,
                                       INC.



                                       By: /s/ Patricia A. Maxey
                                           ------------------------------------
                                           Patricia A. Maxey
                                           Secretary

PAM:kms