| Siman Island | |
| Native Name: | Симан |
| Native Name Link: | Russian language |
| Nickname: | --> |
| Coordinates: | 55.8742°N 83.7736°W |
| Location: | Ob River |
| Coastline M: | --> |
| Country: | Russia |
| Country Area M2: | or |
| Country Area Ha: | --> |
Siman Island (Russian: Симан) is a large island in the Ob River. It is located in Novosibirsk and Tomsk oblasts.
The island is about 45 km long and 15 km wide.[1]
In the past, Lugovaya Village was located on the island, founded in the 1850s.[2]
Since 2013, one person lives on the island (disabled person).[3]