Glebe Collegiate Institute is a high school in the Glebe neighbourhood of Ottawa, Ontario, Canada. Administered by the Ottawa-Carleton District School Board, Glebe Collegiate Institute has approximately 1,500 students; students and sports teams are referred to as "Gryphons". Glebe is the OCDSB's largest school. The Gryphons's performance has led to Glebe Collegiate Institute being consistently ranked one of the premier athletics schools in Canada.