John Farquhar
John Farquhar may refer to:
- John Farquhar (gunpowder dealer), British arms dealer, briefly owner of Fonthill Abbey
- John Farquhar (American football), American football tight end
- John Farquhar (Australian cricketer), Australian cricketer
- John Farquhar (Scottish cricketer)
- John Farquhar (footballer), Scottish footballer
- John McCreath Farquhar, United States Representative from New York and recipient of the Medal of Honor
- John Hanson Farquhar, United States Representative from Indiana
- J. N. Farquhar, Scottish missionary in India