| Pratap Singh | |
|---|---|
 Pratap Singh Bhonsle | |
| Raja of Thanjavur | |
| Reign | 1739 - 16 December 1763 |
| Coronation | 1739, Durbar Hall, Tanjore Fort |
| Predecessor | Shahuji II |
| Successor | Thuljaji II |
| Died | 16 December 1763 Tanjore Fort |
| Spouse | Five wives and seven secondary wives |
| Issue | Thuljaji II Amar Singh |
| Dynasty | Bhonsle |
| Father | Tukkoji |
| Religion | Hinduism |
Pratap Singh Bhonsle or Pratapsinha (Marathi: तंजावरचे प्रतापसिंह) was the Maratha ruler of Thanjavur of the Bhonsle dynasty from 1739 to 1763. His rise to power followed three years of anarchy and civil war and restored the state to its previous greatness. His reign witnessed the Carnatic Wars and the Seven Years' War.