Harder (surname)
Harder is a surname. Notable people with the surname include:
- Ashley Harder
- Christopher Harder
- Fred Harder
- Elaine Harder, American politician
- , German SS-Hauptscharführer in Auschwitz concentration camp
- George Harder
- Hauke Harder
- Heinrich Harder
- Hieronymus Harder, German botanist
- James Harder
- Jan Harder
- Josh Harder, American politician
- Kelsie B. Harder
- Lutz-Michael Harder, German opera tenor
- Mel Harder
- Pat Harder
- Pernille Harder
- Rhea Harder
- Robert Harder, American politician
