Cosgrove High School is a government co-educational comprehensive junior secondary school located in Glenorchy, a suburb of Hobart, Tasmania, Australia. Established in 1951 and named in honour of Sir Robert Cosgrove, the school caters for approximately 200 students from Years 7 to 10. The school is administered by the Tasmanian Department of Education. In 2019 student enrolments were 183. The school principal is Andrew Woodham.