A memorial service for Alex Gard, caricaturist, will be held at 8 P.M. tomorrow in the Russian Orthodox Church of Christ the Saviour, 121st Street and Madison Avenue.  There will be a funeral mass inthe same church at 10 A. M. Saturday.  Burial will take place in the Arlington National Cemetery.

Mr. Gard, well known in the theater world for his caricatures on the walls of Sardi's Restaurant, died on Tuesday at the age of 48.  He resided at 167 East Eighty-second Street.