| Mairehau High School | |
| Motto: | Maori: Mairetia i te matauranga |
| Motto Translation: | Be fragrant with wisdom |
| Type: | State co-educational secondary |
| Address: | Hills Road |
| Coordinates: | -43.4939°N 172.6486°W |
| Chairperson: | Chris Caselton |
| Principal: | Harry Romana |
| Roll: | |
| Decile: | 4K[1] |
| Years: | 9–13 |
| Moe: | 320 |
Mairehau High School is a state co-educational secondary school in Mairehau, Christchurch, New Zealand. The school takes its name from the suburb Mairehau having been adopted in 1916 as a compliment to Mrs Mairehau Hutton whose father, Arthur Gravenor Rhodes, owned considerable property in the area and was a notable benefactor to the district.[2]
The school is located at the northeast end of the suburb, near to Shirley, thus forming a coeducation alternative to Shirley Boys' High School, and Avonside Girls' High School. Mairehau High School opened on 1 February 1961, having been constructed on the advice of the Department of Statistics.
Mairehau uses waka groups in place of school houses.[3]
The names and colours of the Mairehau waka groups are: