Prince John
Prince John may refer to:
- John, [King of England] known as Prince John during the reigns of his father and older brother
- Prince John of the United Kingdom, youngest son of King George V
- John of Eltham, Earl of Cornwall, second son of Edward II
- John of Gaunt, 1st Duke of Lancaster, third son of Edward III
- John of Lancaster, 1st Duke of Bedford, second son of Henry IV
- Prince [Alexander John of Wales], third son and youngest child of Edward VII
- Prince John Konstantinovich of Russia, great-grandson of Nicholas I of Russia
- Prince John August of Saxe-Gotha-Altenburg, son of Frederick II, Duke of Saxe-Gotha-Altenburg
Other
- Nickname of Confederate general John B. Magruder
- Prince John (horse), champion racehorse