No, Andrew Lloyd Webber did not compose Les Misérables. The musical Les Misérables was composed by Claude-Michel Schönberg, with lyrics by Alain Boublil and Jean-Marc Natel. The English-language version, which is the most well-known, features additional lyrics by Herbert Kretzmer. Andrew Lloyd Webber is a famous composer known for works like The Phantom of the Opera, Cats, and Jesus Christ Superstar, but he was not involved in the creation of Les Misérables.