Antoinette Millicent Hedley Anderson (1907 - 1990) was an English singer and actor.

Known as Hedli, she studied singing in England and Germany, before returning to London in 1934. Anderson joined the Group Theatre, and performed in cabaret and in the initial productions of plays by W. H. Auden, Christopher Isherwood and Louis MacNeice. She married MacNeice in 1942, the couple had one daughter and divorced in 1960.

Among the composers and lyricists who wrote songs for her were Auden, MacNeice, Benjamin Britten, Elisabeth Lutyens and William Alwyn. Auden's Funeral Blues (later to become famous as a poem in the film Four Weddings and a Funeral) was originally written for Anderson and set to music by Britten; she first sang it in Auden and Isherwood's play The Ascent of F6 (1936).