John Belcher may refer to:
John Belcher (politician) (1905–1964), British Labour Party Member of Parliament 1945–1949 John Belcher (architect) (1841–1913), English architect and writer John E. Belcher (1834–1915), Irish-born Canadian civil engineer and architect John Belcher (Methodist preacher) ( 1721–1763), Welsh Methodist preacher John Winston Belcher (born 1943), American physicist