Thomas Raymond Quinlan (born March 27, 1968 in Saint Paul, Minnesota) is a former third baseman in Major League Baseball. Quinlan spent parts of four seasons in the major leagues with the Toronto Blue Jays, Philadelphia Phillies and Minnesota Twins. He is the older brother of Robb Quinlan, an infielder who currently is a Free Agent.

Quinlan was a two-sport star in high school. He was also drafted by the National Hockey League's Calgary Flames in the 4th round, 79th overall in the 1986 NHL Entry Draft. While he did express some interest in playing hockey professionally, Quinlan ultimately focused on baseball.