Mark Westley Williams (born July 28, 1953) is an American former professional baseball outfielder. He played in three games for the Oakland Athletics of Major League Baseball in 1977, going 0-for-2 with 1 RBI.
Mark Williams
| Given name: | Mark Westley Williams |
| Nicknames: | Cadillac |
| Primary Pos: | Rightfield |
| Hght/Wght: | 6'0" / 180 lbs |
| Bats/Throws: | L / L |
| Born: | Jul 28, 1953 in Elmira, NY |
| Age: | 71 |
| Debut: | May 20, 1977 |