| Official Name: | Diagorou |
| Pushpin Map: | Niger |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Niger |
| Subdivision Type: | Country |
| Subdivision Name: | Niger |
| Subdivision Type1: | Region |
| Subdivision Name1: | Tillaberi Region |
| Subdivision Type2: | Communes of Niger |
| Subdivision Name2: | Diagorou |
| Population As Of: | 2011 |
| Population Footnotes: | [1] |
| Population Total: | 1,386 |
| Coordinates: | 13.9111°N 0.8136°W |
Diagorou is a town in southwestern Niger, Say Department, Tillaberi Region. It lies west of the Niger River, roughly halfway between the capital, Niamey, and the Nigerien border with Burkina Faso. It is within the historic Liptako region. The town lies roughly 230 metres above sea level.[2] Diagorou sits some 91 mi or (147 km) West of Niamey, the country's capital.[3]