Öjaren is a lake in Gävle municipality north of Sandviken. The lake is part of the Gävleån catchment area and is drained by the Högboån (Säverängsån). It is 10 meters deep and has an area of 19.6 square kilometers.
The lake has good access to pike and perch, partly coarse. The fishery management area includes the lakes Öjaren, Lillsjön, Långsjön and Järvsjön. Fishing is also permitted in other waters within the boundaries of the fishery management area.
