Megan Williams (11 September 1956 – 17 April 2000) was an Australian actress and singer, who played a continuing role as Alice Sullivan in the television drama The Sullivans, and won a Logie Award for her work in Anzacs (1985).

Williams was born in London, England to David and Chin Yu Williams who appeared in a West End production of South Pacific. At six months old, Williams had a minor TV role as an abandoned baby on The Adventures of Robin Hood (1957). Williams' family moved to Sydney, New South Wales, Australia where she pursued an acting career.

Williams had an operation for breast cancer in 1997, however the disease was diagnosed again in December 1999 and she died at Darlinghurst Sacred Heart Hospice, Sydney, New South Wales, Australia in 2000, aged 43.