| Ikuchijima | |
| Map: | Japan#Japan Hiroshima Prefecture |
| Native Name: | 生口島 Ikuchijima |
| Native Name Link: | Japanese language |
| Location: | Seto Inland Sea |
| Coordinates: | 34.2876°N 133.1079°W |
| Archipelago: | Geiyo Islands |
| Area Km2: | 31.21 |
| Length Km: | 8.8 |
| Width Km: | 4.9 |
| Coastline Km: | 24 |
| Highest Mount: | Mount Kanno |
| Elevation M: | 472.3 |
| Country: | Japan |
| Country Admin Divisions Title: | Prefecture |
| Country Admin Divisions: | Hiroshima Prefecture |
| Country Admin Divisions Title 1: | City |
| Country Admin Divisions 1: | Onomichi |
| Population: | 11000[1] |
| Population As Of: | 2006 |
| Density Km2: | 352 |
| Ethnic Groups: | Japanese |
is one of the Geiyo Islands in the Seto Inland Sea, belonging to Hiroshima Prefecture in Japan. Ikuchijima is administered as part of Onomichi city. There are bridges connecting Ikuchijima to the mainland (Honshū) via Innoshima and to Shikoku via Ōmishima Island. The highest peak of this 31.21 km2 island is Mount Kanno at 472.3m (1,549.5feet).
The Wajinden (c. 290) notes that slaves (生口) were kept in the area and the island's name may come from this. In The Inland Sea, Donald Richie describes the island as “a smaller Sardinia, a greener Corsica”. The main crop on Ikuchijima today is citrus, and the island is now known as "lemon island of Japan".[2]