Shani Wallis (born 14 April 1933 in Tottenham, London) is an English actress and singer, who released several records in the 1950s.

Making her first stage appearance at the age of four, she later studied at the Royal Academy of Dramatic Art (RADA) on a scholarship, and went on to play many leading lady roles in the West End, but she is best known for the role of Nancy in Carol Reed's 1968 film production of Lionel Bart's musical Oliver! which co-starred Ron Moody, Harry Secombe, Oliver Reed, Jack Wild and Mark Lester.

Wallis is a naturalized citizen of the United States, where she has lived for many years. She has been married to agent Bernie Rich since 1965; they have one child, Rebecca, and two granddaughters. She is also the sister of jazz drummer Leon Roy. She is a patron of The Music Hall Guild of Great Britain and America

Wallis has appeared with Liberace, Jack Benny, Dean Martin and Jerry Lewis.