| Official Name: | Cotiakou |
| Settlement Type: | Arrondissement and town |
| Pushpin Map Caption: | Location in Benin |
| Subdivision Type: | Country |
| Subdivision Name: |  Benin |
| Subdivision Type1: | Department |
| Subdivision Name1: | Atakora Department |
| Subdivision Type2: | Commune |
| Subdivision Name2: | Tanguiéta |
| Unit Pref: | Imperial |
| Population As Of: | 2002 |
| Population Total: | 9163 |
| Timezone: | WAT |
| Utc Offset: | +1 |
Cotiakou is a town and arrondissement in the Atakora Department of northwestern Benin. It is an administrative division under the jurisdiction of the commune of Tanguiéta. According to the population census conducted by the Institut National de la Statistique Benin on February 15, 2002, the arrondissement had a total population of 9,163.[1]