John Donnelly
John Donnelly may refer to:
- John Aiden Donnelly, Gardaí officer and recipient of the Scott Medal, born 1952
- John Donnelly (baseball), 19th-century baseball player
- John Donnelly (footballer), Scottish footballer, played for Celtic FC in the 1957 Scottish League Cup Final
- John Donnelly (I.F.A.), Irish farmer who was President of the Irish Farmers' Association, 1994-1998
- John Donnelly (rower) (1905–1986), Canadian Olympic rower
- John Donnelly (rugby league) (died 1986), Australian rugby league footballer
- John Donnelly (table tennis) (born 1906), American table tennis player