| Genkai Island | |
| Native Name: | 玄界島 Genkai-jima |
| Map: | Japan |
| Location: | Genkai Sea |
| Coordinates: | 33.69°N 130.2333°W |
| Area Km2: | 1.14 |
| Coastline Km: | 4.4 |
| Elevation M: | 217.9 |
| Country: | Japan |
| Country Admin Divisions Title: | Prefecture |
| Country Admin Divisions: | Fukuoka Prefecture |
| Country Admin Divisions Title 1: | City |
| Country Admin Divisions 1: | Fukuoka City |
| Country Admin Divisions Title 2: | Ward |
| Country Admin Divisions 2: | Nishi-ku |
| Website: | Genkai-jima Official Site |
is an island in Nishi-ku, Fukuoka, Japan. The island was seriously damaged by the 2005 Fukuoka earthquake. The affected areas of the island were reconstructed by 2008.