John Martin may refer to: Business. John Martin (businessman) (1820–1905), American lumberman and flour miller. John Charles Martin (fl. 1913–1931), American newspaper publisher. John Martin (publisher) (born 1930), American founder of Black Sparrow Press. John C. Martin (businessman) (1951–2021), CEO of biotechnology company Gilead Sciences. Entertainment. John Martin (actor) (born 1951), American actor. John Martin (painter) (1789–1854), English painter. John Blennerhassett Martin (1797–1857), American painter, engraver, and lithographer.
https://en.wikipedia.org/wiki/John_Martin