Matthew Marshall Dunbar (born October 15, 1968) is an American former Major League Baseball (MLB) pitcher who played for the Florida Marlins in 1995.

A native of Tallahassee, Florida, Dunbar attended Dunedin High School and Florida State University.

He made his major league debut with the Marlins in 1995, and appeared in eight games for the team that season.

His final professional season was spent with the Pittsburgh Pirates' Double-A Altoona Curve and Triple-A Nashville Sounds in 1999.

This biographical article relating to an American baseball pitcher born in the 1960s is a stub.