John Marsh
John Marsh may refer to:
Politicians
- John Marsh (MP fl. 1394–1397), MP for Bath
- John Marsh (MP fl. 1414–1421), MP for Bath
- John Allmond Marsh (1894–1952), Canadian Member of Parliament
- John Otho Marsh Jr. (1926–2019), American congressman and Secretary of the Army
Association football
- John Marsh (footballer, born 1922) (1922–1997), known as Jack, English footballer
- John Marsh (footballer, born 1940), English footballer
- John Marsh (footballer, born 1947), known as Jack, English footballer
- John Marsh (footballer, born 1948), known as Jackie, English footballer
Others
- John Marsh (died 1688/1689), of Hartford, son-in-law of John Webster
- John Marsh (1611–1674), of Salem, son-in-law of Samuel Skelton
- John Marsh (composer) (1752–1828), English composer, diarist and writer
- John Marsh (minister) (1788–1868), American minister and temperance advocate
- John Marsh (pioneer) (1799–1856), American pioneer and early California settler
- John Fitchett Marsh (1818–1880), English solicitor, official and antiquary
- John Marsh (theologian) (1904–1994)
- John Marsh (priest) (born 1947), British Anglican clergyman
- Jon Marsh, musician in The Beloved
- Jack Marsh (1874–1916), Australian cricketer
- John Marsh, CFO of ESS Technology