Martin Grüner (19 July 1929 – 4 February 2018) was a German politician. He was a member of the Free Democratic Party (FDP). He was born in Schramberg, Germany. He was Parliamentary Secretary at the Economics Ministry from 1972 to 1987 and then Parliamentary Secretary at the Environment Ministry until 1991.
Grüner died on 4 February 2018 at the age of 88.