Mark Andrew Kiefer (born November 13, 1968) is a former Major League Baseball pitcher. He played in parts of four seasons in the majors, from 1993 until 1996, for the Milwaukee Brewers. He pitched a total of 44 games, all in relief. He also played for four years in the Chinese Professional Baseball League for the Sinon Bulls and three years in the Korea Baseball Organization for the Kia Tigers and the Doosan Bears.

Kiefer's brother, Steve Kiefer, also played in the major leagues as an infielder.

[ Source: Wikipedia ]