Jon Porter (born 1955), US Congressman from Nevada

John Porter (bishop) (fl. 1790s), a Bishop of Clogher

John Porter (musician) (born 1947), a British guitarist, bassist, and producer

John Porter (sociologist) (1921-1979), a Canadian sociologist

John Porter (Illinois politician) (born 1935), an Illinois politician, U.S. Representative

John Addison Porter (1822-1866), United States professor of chemistry

John Porter Stakes United Kingdom Thoroughbred horse named for the trainer

John Porter (captain) (fl. 1759), first captain of the first HMS Hercules

John Clinton Porter (1872-1959), a California politician, mayor of Los Angeles

John Porter (horseman) (1838-1922) was a trainer in British Thoroughbred flat racing

John Porter (Pennsylvania politician) (fl. 1810s), a Pennsylvania politician, U.S. Representative