| Gnanmangui | |
| Other Name: | Gnamandji |
| Settlement Type: | City and sub-prefecture |
| Pushpin Map: | Ivory Coast |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Ivory Coast |
| Subdivision Type: | Country |
| Subdivision Type1: | District |
| Subdivision Name1: | Bas-Sassandra |
| Subdivision Type2: | Region |
| Subdivision Name2: | Nawa |
| Subdivision Type3: | Department |
| Subdivision Name3: | Méagui |
| Unit Pref: | Metric |
| Population As Of: | 2014 |
| Population Footnotes: | [1] |
| Population Total: | 116476 |
| Population Blank1 Title: | Ethnicities |
| Utc Offset: | +0 |
| Coordinates: | 5.8167°N -48°W |
Gnanmangui (also spelled Gnamandji) is a bakwé city in south-western Ivory Coast. It is a sub-prefecture of Méagui Department in Nawa Region, Bas-Sassandra District.
The western third of the sub-prefecture is located in Taï National Park.
Gnanmangui was a commune until March 2012, when it became one of 1126 communes nationwide that were abolished.[2] In 2014, the population of the sub-prefecture of Gnanmangui was 116,476.[3]
The twenty five villages of the sub-prefecture of Gnanmangui and their population in 2014 are:[3]