Studyonoye () is a lake in Karasuksky District, Novosibirsk Oblast, Russian Federation.
The lake is located at the southwestern end of the Oblast. The nearest inhabited place is Studyonoye, located by the northern lakeshore. Karasuk, the district capital, lies to the northeast.
Studyonoye lies in the transitional zone between the Baraba Lowland and the Kulunda Steppe, West Siberian Plain. It is part of the Karasuk river basin of the Ob-Irtysh interfluve. The lake has an elongated shape, stretching from north to south for almost . Smaller lake Zimneye is located close to the southwest of the southern end. The mouth of the Karasuk river lies in the middle of the eastern shore. The river reaches the lake in years of abundant water. Lake Chagan straddles the KazakhstanâÂÂRussia border to the south, Astrodym lies to the east, Bolshoye Topolnoye to the southeast, and Mochan to the NNE.
Lake Studyonoye is surrounded by steppe vegetation. Reeds grow in the shallow shoreline of the lake.