Armadale Senior High School is a public co-educational specialist high day school, located on the South Western Highway, in the Perth suburb of Armadale, Western Australia.

In 2015 Armadale Senior High School welcomed its first cohort of Year 7 students along with all other senior high schools across the state.

The transition of year 7 students to high school finally brought Western Australia into line with all other Australian states.

The inaugural Principal was Carl Riedel who managed the school from 1953 to 1956.

Mary Griffiths, served the Armadale Senior High School community since 2007 as principal.