Niedermayer is a German surname and may refer to:
- Kurt Niedermayer, German football/soccer player
- Oskar von Niedermayer, German general, professor and adventurer
- Rob Niedermayer, Canadian ice hockey player (brother of Scott)
- Scott Niedermayer, Canadian ice hockey player (brother of Rob)
- Thomas Niedermayer, German industrialist, kidnapped and killed by the Provisional IRA