John Johnstone

• Jock Johnstone
• John Henry Johnstone
• John Heywood Johnstone
• John Hope-Johnstone (disambiguation)
• John Johnston (disambiguation)
• John Johnstone (Australian politician)
• John Johnstone (East India Company)
• John Johnstone (English footballer)
• John Johnstone (athlete)
• John Johnstone (baseball)
• John Johnstone (businessman)
• John Johnstone (footballer, born 1869)
• John Johnstone (mayor)
• John Johnstone (physician)
• Sir John Johnstone, 1st Baronet