John Chalmers

• John Chalmers (missionary), Scottish Protestant missionary in China and translator
• John Chalmers (coach), American football, basketball and baseball coach
• John Alan Chalmers, British atmospheric physicist
• John Chalmers (trade unionist), Scottish trade unionist
• John Chalmers (surgeon), Scottish orthopaedic surgeon
• John Chalmers (medical researcher), Australian medical researcher
• John Chalmers (moderator), minister of the Church of Scotland
• One half of the duo who creates comic books under the pseudonym Metaphrog