Alan Klein (born Alan Charles Klein, 29 June 1940, Clerkenwell, London is an English singer-songwriter and musician. He wrote the soundtrack for the stage play and film, What a Crazy World (1963).In 1964, he released his only solo album, Well At Least Its British, that was re-released in 2008 by RPM Records.

Many of his recordings were made with the record producer, Joe Meek.

In 1966 he went on tour as lead vocalist of The New Vaudeville Band.