John Ralston
John Ralston may refer to:
- John Ralston (actor), Canadian actor
- John Ralston (American football), American football player and coach
- John Ralston (musician), American rock musician
- John Ralston (chemist), Australian scientist and researcher
- John de Ralston, Scottish bishop and administrator
- John T. Raulston, Tennessee judge who presided over the 1925 Scopes Trial
- John Steel Ralston, Scottish World War I flying ace
- John G. Ralston, American architect in Iowa
- John Ralston (baritone), Australian baritone
- John Ralston (artist), Scottish painter