Lake Ober-See (German: Obersee, "Upper Lake") is a permanently-frozen glacial meltwater lake lying between Sjøneset Spur and Mount Seekopf in the Gruber Mountains of Queen Maud Land, Antarctica. The lake was discovered by the German Antarctic Expedition under Alfred Ritscher, 1938–39.

Lake Ober-See is located a few kilometers to the northeast of Lake Untersee (German: Untersee, "Lower Lake"), a larger lake but similar in most respects to Lake Ober-See, and the best-studied lake in the region. Divers have dived in Lake Ober-See to study its microbial communities.

 This article incorporates public domain material from "Lake Ober-See". Geographic Names Information System. United States Geological Survey. 

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