Suzanne Somers (born Suzanne Marie Mahoney; October 16, 1946) is an American (United States) actress, author, singer and businesswoman, best known for her television roles as Chrissy Snow on Threes Company and as Carol Lambert on Step by Step (Step By Step (TV series)).

Somers later became the author of a series of best-selling self-help books, including Ageless: The Naked Truth About Bioidentical Hormones (2006), a book about bioidentical hormone replacement therapy. She has also released two autobiographies, four diet books, and a book of poetry entitled "Touch Me" (1980). She currently features items of her design on ShopNBC.Citation neededdate=January 2010

She has been criticized for her views on some medical subjects and her advocacy of the Wiley Protocol, which has been labelled as "scientifically unproven and dangerous". Her promotion of alternative cancer treatments has received criticism from the American Cancer Society.