Gloucester High School is a high school in the Beacon Hill neighbourhood of Ottawa, Ontario, Canada.

Gloucester High School provides education to grades 9 through 12 through a semestered curriculum as established by the Ontario Ministry of Education.

In 2010, Gloucester's Reach for the Top team came 4th at the national finals.

Gloucester High School has many successful sports teams.

Athletic teams include basketball, cheerleading, field hockey, football, golf, ice hockey, Nordic skiing, rugby, soccer, track and field, volleyball, and wrestling.