Mark London (born 30 January 1940 in Montreal, Quebec) is a Canadian-born British soundtrack composer, songwriter and music producer. He is perhaps best known as composer of the song "To Sir, with love".
Mark London first achieved prominence in 1967 as the composer of the melody to "To Sir With Love", the title song from James Clavell's movie of the same name, starring Sidney Poitier, Judy Geeson and Lulu, after initially working as a comedian following a move to London. The song, co-written with lyricist Don Black, was recorded by Lulu and released as a single in the US, becoming the Billboard Year-End Top Single for 1967.