Hosta

John Gwynne, Gwynn or Gwyn may refer to:

Politicians

• John W. Gwynne (1889–1972), Republican U.S. representative from Iowa
• John Gwynne (MP for Bath) (fl. 1563), English member of parliament (MP)
• John Gwynne (MP for Caernarvonshire) (died 1574), MP for Caernarvonshire (UK Parliament constituency)
• John Gwyn (MP for Cardigan) (fl. 1553 – c. 1567), MP for Cardigan (UK Parliament constituency)
• John Gwynne (MP for Wareham) (fl. 1572), MP for Wareham (UK Parliament constituency)

People in sport

• John Tudor Gwynn ("Jack", 1881–1956), Irish cricketer and reporter in British India
• John David Gwynn (1907–1998), Irish cricketer and civil engineer
• John Gwynne (commentator) (1945–2022), British sport reporter and commentator

Others

• John Gwynne (captain) (fl. 1660), Welsh soldier
• John Gwynn (architect) (1713–1786), British architect and civil engineer
• John Gwyn (philanthropist) (1755–1829), Derry linen merchant and benefactor
• John Wellington Gwynne (1814–1902), Canadian lawyer and Supreme Court judge
• John Gwynn (Syriacist) (1827–1917), Irish Syriacist and Anglican dean