Belmont Hill School is an all-boys day and optional five-day boarding school in Belmont, Massachusetts, a suburb of Boston. The school enrolls approximately 470 boys in grades 7–12, separated into the Middle School (Forms I-III, or grades 7–9) and the Upper School (Forms IV-VI, or grades 10–12).

The school's rowing team has won five national championships, and its ice hockey team has produced two Olympic gold medalists and three Hobey Baker Award winners.