| Mahendra Singh | |
|---|---|
| Maharaja of Patiala (more) | |
 Mahendra Singh in 1870 | |
| Maharaja of Patiala | |
| Reign | 1862-1876 |
| Predecessor | Narinder Singh |
| Successor | Rajinder Singh |
| Born | 16 September 1852 |
| Died | 13 April 1876 (aged 23) Moti Bagh Palace, Patiala |
| Issue | Rajinder Singh |
| Dynasty | Phulkian |
| Father | Narinder Singh |
| Religion | Sikhism |
Mahendra Singh GCSI (1852-1876) was the Maharaja of Patiala from 1862 to 1876.