Maximilian Planer (born 28 January 1991) is a German representative rower.

In 2013 Planer moved into the German senior squad and a coxless four which finished in overall twelfth place at the 2013 World Rowing Championships in Chungju, South Korea.

The 2014 eight was successful at the European Championships and the World Rowing Cup II and then at the 2014 World Rowing Championships in Amsterdam finished 0.66 seconds behind Great Britain and brought home a silver medal.

[5] The German marquee boat -the men's eight- was rebuilt in 2017 following the Olympics and Planer was one of five new oarsmen who gained seats.

They competed at all regattas in the international season and finished in overall tenth place at the 2019 World Rowing Championships.