| Grand-Lahou | |
| Settlement Type: | Town, sub-prefecture, and commune |
| 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: | Lagunes |
| Subdivision Type2: | Region |
| Subdivision Name2: | Grands-Ponts |
| Subdivision Type3: | Department |
| Subdivision Name3: | Grand-Lahou |
| Unit Pref: | Metric |
| Area Total Km2: | 1100 |
| Population As Of: | 2021 census |
| Population Footnotes: | [1] |
| Population Note: | (2014 census) |
| Population Total: | 77479 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Town |
| Population Blank1: | 28470[2] |
| Population Blank2 Title: | Ethnicities |
| Timezone: | GMT |
| Utc Offset: | +0 |
| Coordinates: | 5.1333°N -6°W |
Grand-Lahou is a coastal town in southern Ivory Coast. It is a sub-prefecture of and the seat of Grand-Lahou Department in Grands-Ponts Region, Lagunes District. Grand-Lahou is also a commune.
Grand-Lahou is situated at the mouth of the Bandama River on the Gulf of Guinea. It was occupied by the British, Germans and Dutch before the French, from 1890 onward, began to develop it as a trading port. It is located near the Assagny National Park.
In 2021, the population of the sub-prefecture of Grand-Lahou was 77,479.[1]
The twenty villages of the sub-prefecture of Grand-Lahou and their population in 2014 are:[3]