| Jean-Baptiste Jeanin | |
| Birth Date: | 22 January 1769 |
| Birth Place: | Val-d'Épy |
| Death Date: | 2 May 1830 |
| Death Place: | Saulieu |
| Nationality: | French |
Jean-Baptiste Jeanin (pronounced as /fr/; 22 January 1771 in Val-d'Épy - 2 May 1830) was a French military commander during the French Revolutionary Wars and Napoleonic Wars, and a brigadier general during the Peninsular War. During the Hundred Days, he commanded the 20th Infantry Division at Ligny and Waterloo.