Imslandsjøen is a lake located in Suldal municipality, Rogaland county, Norway.
The lake is situated northeast of the village of Imsland, after which it is named. It is an integral part of the larger Suldalslågen water system, which is a significant hydrological feature in the region. Imslandsjøen flows into the Suldalslågen river, a watercourse renowned for its salmon fishing and its role in hydroelectric power generation.
While relatively modest in size, Imslandsjøen contributes to the local hydrology and forms part of the scenic landscape characteristic of inland Rogaland. The area surrounding the lake features typical Norwegian terrain, including forested slopes and hilly topography.