Leinavatn is a lake on the border between Norway and Sweden. It is almost entirely located in the municipality of Bardu in Troms county in Norway, but a very small area crosses over into Kiruna Municipality in Norrbotten County in Sweden. The lake's area is 28.32 square kilometres (10.93 sq mi) and it sits at an elevation of 491 metres (1,611 ft) above sea level. Its shoreline measures 62.83 kilometres (39.04 mi).