Martin Gregory Karow [born Karowsky] (July 18, 1904 – April 27, 1986) was an All-American college football player and a professional baseball player. He was a fullback on the Ohio State University football team from 1924 through 1926. In 1926 he was team captain and led the team to a 7–1 record. After the season, he was named to several All America teams. After college, he became a backup infielder in Major League Baseball who played in six games for the Boston Red Sox in the 1927 season. A native of Braddock, Pennsylvania, he batted and threw right-handed. Karow died in Bryan, Texas at age 81.