Rangiora High School is a state co-educational secondary school located in Rangiora, New Zealand. Established in 1881 by an act of parliament and opened in 1884, the school has a roll of 1,652 students from years 9 to 13 as of February 2024, making it the fifth-biggest school in the South Island.

Rangiora is the largest town and seat of the Waimakariri District, in Canterbury, New Zealand. It is 29 kilometres (18 mi) north of Christchurch, and is part of the Christchurch metropolitan area. With an estimated population of 19,600, Rangiora is the 30th largest urban area in New Zealand, and the fifth-largest in the Canterbury region.