John Latham may refer to:
John Latham (ornithologist) (1740–1837), British physician, naturalist and author
John Latham (1761–1843), English physician, President of the Royal College of Physicians
John Latham (1787–1853), his son, English magistrate and poet
John Latham (judge) (1877–1964), Australian judge and politician
John Cridland Latham (1888–1975), U.S. Army soldier and Medal of Honor recipient
John Latham (artist) (1921–2006), conceptual artist born in Zambia
John Latham (Whitewater), U.S. bank executive involved in Whitewater controversy, 1990s
Jack Latham (1914–1987), U.S. actor
John Latham (physicist)