| Ivan Sergeyevich Leontiev | |
| Birth Date: | 2 March 1782 |
| Death Date: | 2 August 1824 |
| Death Place: | Penza, Russian Empire |
| Branch: | Army |
| Serviceyears: | 1799 - 1824 |
| Commands: | 1st Brigade, 2nd Cuirassier Division |
| Battles: | |
| Awards: | Order of St. George Order of the Red Eagle Order of St. Vladimir Order of Saint Anna Military Order of Max Joseph Kulm Cross Gold Sword for Bravery |
Ivan Sergeyevich Leontiev (2 March 1782 - 2 August 1824) was an Imperial Russian general who fought in the Napoleonic Wars. In December 1812 he was promoted to major general and made commander of the 1st Brigade of the 2nd Cuirassier Division under Baron Duka and fought at the battles of Lützen and Bautzen.[1]