John Chalmers

John Chalmers may refer to:


 * John Chalmers (missionary) (1825–1899), Scottish Protestant missionary in China and translator
 * John Chalmers (coach) (1874–1962), American football, basketball and baseball coach
 * John Alan Chalmers (1904–1967), British atmospheric physicist
 * John Chalmers (trade unionist) (1915–1983), Scottish trade unionist
 * John Chalmers (surgeon) (born 1927), Scottish orthopaedic surgeon
 * John Chalmers (medical researcher) (born 1937), Australian medical researcher
 * John Chalmers (moderator), minister of the Church of Scotland
 * One half of the duo (with Sandra Marrs) who creates comic books under the pseudonym Metaphrog