John Dyer (1699–1757) was a painter and Welsh poet.

John Dyer may also refer to:

• Buddy Dyer (John Hugh Dyer, born 1958), mayor of Orlando, Florida
• Sir John Dyer, 6th Baronet (1738–1801), English soldier and courtier who was Groom of the Bedchamber to the Prince of Wales.
• John Dyer (rugby union) (born 1992), Fijian rugby union player
• John James Dyer (1809–1855), United States federal judge in Iowa
• John Lewis Dyer (1812–1901), Methodist Episcopal clergyman and one of sixteen founders of 19th century Colorado
• John Smith alias Dyer (1498/99–1571), MP for Ipswich 1547, 1553 and 1554
• John Dyer (14th-century MP), cloth merchant and member of the Parliament of England

• John Dwyer (disambiguation)
• John Dyer Baizley, American musician and poet

This disambiguation page lists articles about people with the same name.
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