John Altman may refer to:
- John Altman (actor) (born 1952), English actor and singer
- John Altman (composer) (born 1949), English film composer, music arranger, orchestrator and conductor
- John Altman (author) (born 1969), American thriller writer
See also
edit- John Altmann (1916–1983), Australian rules footballer
- Jon Charles Altman (born 1954), Australian social scientist