Kent Franklin Mercker (born February 1, 1968) is an American former Major League Baseball left-handed pitcher.

Mercker was born in Brownsburg, Indiana and lived in several different cities, including four years in Export, Pennsylvania, before his family settled in Dublin, Ohio in 1980.

He made his major league debut with the Braves on September 22, 1989, and appeared in two games that season.

Mercker then became a journeyman, spending time with Baltimore (1996), Cleveland (1996), Cincinnati (1997, 2003, 2005-2006, 2008), St. Louis (1998-1999), Boston (1999), Anaheim (2000), Colorado (2002), Atlanta (2003), and the Chicago Cubs (2004).

[5] On February 8, 2008, Mercker signed a minor league contract with Cincinnati with an invitation to spring training.