Northam Senior High School is a comprehensive public co-educational high school, located in Northam, a regional centre in the Wheatbelt region, 97 kilometres (60 mi) east of Perth, Western Australia.

It is the oldest senior high school outside the Perth metropolitan area.

[3] Many of the buildings are heritage listed having been built in 1921, 1930 and 1945.

The main school building, designed by the Principal Architect of Western Australia, William Hardwick, and the later additions that followed the original design are considered good examples of the inter-war arts and crafts style.

^* The Government of Western Australia manages the Indian Ocean Territories under the Territories Law Reform Act 1992