Ansoo Lake also spelled as Ansu Lake, is a tear-shaped lake located in Kaghan Valley in Mansehra District of Khyber Pakhtunkhwa the province of Pakistan. It is located at an elevation of 4,245 metres above sea level and considered one of the highest lakes of the Himalaya Range. The lake is situated near Malika Parbat, the highest mountain in Kaghan Valley. The name of the lake owes to its teardrop shape; the Urdu word ansoo means “teardrop”. The lake is said to have been discovered in 1993 by Pakistan Air Force pilots who were flying at a relatively low altitude over the area.