Hillcrest High School is an Ottawa-Carleton District School Board high school in the Elmvale Acres neighbourhood of Ottawa, Ontario, Canada. The school was opened in 1961. Its sports teams are nicknamed "The Hawks". Its exclusive catchment area covers the neighbourhoods of Riverview, Faircrest Heights, Playfair Park, Elmvale Acres, Urbandale, Hawthorne Meadows, Sheffield Glen, Hunt Club Park and part of Greenboro.

Hillcrest High School is an ethnically diverse school. The surrounding area includes significant Black, Arab, Indian, and Somali communities, among others. Hillcrest also offers a full-immersion French program.