Khankul Lake, Protected lake in Siberia, Russia

Khankul Lake, also called Solenoye, is an elongated salt lake about 700 m long and up to 4 m deep, lying at the foot of a low mountain ridge in Askiz District, Khakassia, 60 km from Abakan. Its open sandy-silty shores are partly boggy and overgrown with shrubs, and the bottom slopes gently except on the south side.

The lake lies in Askizsky District of Khakassia and is listed as a republican landscape nature monument. The Khankul mineral water field nearby was identified and surveyed in 2001–2002, with water drawn from fractured Upper Devonian deposits at depths of 100–150 m. The lake was placed under protection to keep its medicinal brine properties.

The lake's Russian name, Солёное (Salty), is used alongside Khankul, and the two nearby water bodies are often confused: the larger one is Солёное, while Khankul is the smaller lake 2 km to the southwest. The name Khankul is also used for bottled mineral water from a nearby underground source.

The lake lies 2 km southwest of Khankul station and 60 km from Abakan on the road to Askiz. The Abakan–Abaza highway and the Novokuznetsk–Abakan railway run between the two local lakes. A beach is on the south shore; the bottom slopes steeply only on the south side.

The lake is fed by a mineral underground source nearby, whose sodium-sulphate water (1.8–2.7 g/L) is bottled and sold under the Khankul name. The lake itself is a republican landscape nature monument, and its water is being desalinated as of 2019.