Martin John Lang (September 27, 1905—January 13, 1968) was a pitcher in Major League Baseball. He played for the 1930 Pittsburgh Pirates. He batted right-handed and threw left-handed. He was 5'11 and weighed 160 lbs (pounds). He attended Concordia University.
Lang was born on September 27, 1905, in Hooper, Nebraska, and died on January 13, 1968, in Lakewood, Colorado.