Paul Fischer may refer to:
- Paul Fischer (footballer) (1882–1942), German footballer
- Paul Fischer (luthier) (born 1941), British maker of musical instruments
- Paul Fischer (painter) (1786–1875), German painter
- Paul Fischer (sailor) (born 1922), German Olympic sailor
- Paul Fischer (sportsman) (1881–?), German athlete and gymnast
- Paul A. Fischer, member of the Alaska Senate
- Paul Gustav Fischer, Danish artist
- Paul Henri Fischer (1835–1893), French physician, zoologist and paleontologist