The Lockhart River is a river in Queensland, Australia. The headwaters of the river rise under Chester Peak in the Chester Range, part of the Great Dividing Range, and flows northwards. It continues past High Range and Heming Range eventually discharging into Lloyd Bay in the Coral Sea. The river has a catchment area of 2,883 square kilometres (1,113 sq mi) of which an area of 134 square kilometres (52 sq mi) is composed of estuarine wetlands. Named by the explorer Robert Logan Jack in 1880 after his friend Hugh Lockhart.