Fishman may refer to:
- a merman or similar piscine humanoid
- Fishman (wrestler), the stage name of luchador José Nájera
- Fishman (The Legend of Zelda), a character in the Zelda video game The Wind Waker
- Fish-man, of Spanish mythology
- Fishmans, a Japanese dub band
- Fishmen, a race in the anime and manga series One Piece
Fishman is a surname adopted by an ashkenazi jewish community. Members include:
- Chuck Fishman, a fictional character from the American TV series Early Edition
- Hal Fishman (1932-2007), an American newsman, based in Los Angeles, who has been the longest-running news anchor in the history of television
- Jay S. Fishman, an American manager
- Jon Fishman, musician
- Joshua Aaron Fishman, American linguist
- Steven Fishman, ex-Scientologist, author of the Fishman Affidavit
- William J. Fishman, the author of several books about the history of the East End of London
- Mosess Fishman (1916-2007), veteran of the Abraham Lincoln Brigade and leader of the organization for many years.
- Michael Fishman, American actor