Gary Charles "Gar" Samuelson (February 18, 1958 – July 14, 1999) was an American musician best remembered for being the drummer for thrash metal band Megadeth from 1984 to 1987, contributing to their first two albums, Killing Is My Business... and Business Is Good! (1985) and Peace Sells... but Who's Buying? (1986). He is considered one of the most influential drummers of thrash metal, having pioneered the incorporation of jazz fusion into the subgenre.