John Crichton

• John Crichton (designer), New Zealand furniture and interior designer
• John Crichton (Farscape), a character on the TV series Farscape
• John Crichton, 3rd Earl Erne, Anglo-Irish peer and politician
• John Crichton, 4th Earl Erne, Anglo-Irish peer and politician
• John Crichton, 5th Earl Erne, Anglo-Irish peer, soldier and politician
• Johnny Crichton, Scottish footballer
• John Michael Crichton, American author, director and screenwriter