Dame Cleo Laine, Lady Dankworth, (born 28 October 1927) is an English jazz and pop singer and an actress, noted for her scat singing and for her vocal range. Though her natural range is that of a contralto, she is able to produce a "G above high C", giving her an overall compass of well over three octaves.

Laine is the only female performer to have received Grammy nominations in the jazz, popular and classical music categories. She is the widow of jazz composer Sir John Dankworth.