The Glenrae River is a river in the Canterbury region of New Zealand. It arises in the Glynn Wye Range near Mount Skiddaw and flows through the Lake Sumner Forest Park south and then south-east into the Hurunui River, which exits in the Pacific Ocean. Its tributaries include Devils Creek and Robyne Creek.

42°49′S 172°30′E / 42.817°S 172.500°E / -42.817; 172.500