| Izaute | |
| Pushpin Map: | France#France Occitanie |
| Source1 Location: | Dému, France |
| Mouth Location: | Joins Gélise on the border of Lot-et-Garonne |
| Subdivision Type1: | Country |
| Subdivision Name1: | France |
| Length: | 37.5km (23.3miles) |
The Izaute is a river in south-western France, a right tributary of the Gélise. It is 37.5km (23.3miles) long.
It has its origin in the commune Dému in the Gers (32) it joins the Gélise on the border of Lot-et-Garonne close to Saint-Pé-Saint-Simon .