Tim Fleiszer (born August 14, 1975) is a former professional Canadian football defensive lineman who played ten seasons in the Canadian Football League (CFL).
He won Grey Cup championships in 1999 with the Hamilton Tiger-Cats, 2002 with the Montreal Alouettes, 2005 with the Edmonton Eskimos, and 2007 with the Saskatchewan Roughriders.
He is the only person to have won four Grey Cups with four teams.