Shelley Marie Hack (born July 6, 1947) is an American Supermodel, actress, politician, peacekeeper and producer.

Hack was born in White Plains, New York and raised in nearby Greenwich, Connecticut. She graduated from Greenwich Academy and Smith College, the latter with a history degree. She began her career as a teen fashion model and became the face of Revlon's Charlie perfume in the mid 1970s, which gave her national exposure on television. In October 1981, Life magazine proclaimed her one of the million-dollar faces in the beauty industry.

Her feature film debut was in Woody Allen's award winning film Annie Hall (1977), as "Street Stranger." She is perhaps best known for her role as Tiffany Welles in the television series Charlie's Angels for one season (1979–80). Unfortunately, the series experienced a significant ratings decline during Hack's time on the show, and the actress was dismissed in early 1980. Afterwards, Hack stated, "A business decision was made. Change the time slot or bring in some publicity. How to get publicity? A new Angel hunt. Who is the obvious person to replace? I am - the new kid on the block." Following Hack's involuntary departure from Charlie's Angels, the actress played a variety of supporting roles, such as in Martin Scorsese's film The King of Comedy (1983). She had a role in the cult horror film The Stepfather and was a regular on two short-lived TV series of the 1980s: Cutter to Houston (1983) and Jack and Mike (1986-87). She had several guest appearances in film and television up until 1997, when she retired from acting.