Downhill is a 1927 British silent drama film directed by Alfred Hitchcock, starring Ivor Novello, Robin Irvine and Isabel Jeans, and based on the play Down Hill by Novello and Constance Collier. The film was produced by Gainsborough Pictures at their Islington studios. Downhill was Hitchcock's fourth film as director, but the fifth to be released. Its American alternative title was When Boys Leave Home.

Ivor Novello was a Welsh actor, dramatist, singer and composer who became one of the most popular British entertainers of the first half of the 20th century.