Kelly Marie Monaco (born May 23, 1976 in Philadelphia, Pennsylvania) is an American model, actress, and reality television contestant.

In 1996, Monaco sent nude photos of herself to Playboy magazine and was contacted one month later by the men's publication. With her family's approval, she traveled to Chicago for a photo shoot. She became Playboy's Playmate of the Month in April 1997, and was also featured in several of its newsstand specials. The work allowed her the opportunity to travel to many exotic locales, including Fiji, Honduras, and throughout South America.

Along with making an appearence in the November 2005 issue of Playboy (previously unpublished pictures from her Miss April 1997 shoot) , Monaco has also made numerous recent cover appearances in scantily-clad magazines such as FHM and Maxim.

Her first television role was on the nightime drama Baywatch from 1997 to 1998. In addition to playing the role of "Susan on "BayWatch", Monaco also was Carmen Electra's body double at times, as Electra could not swim. Monaco also had minor roles in the late 1990s films BASEketball, Idle Hands, and Mumford.

Monaco had two roles on the supernatural television soap opera Port Charles: Olivia “Livvie” Locke Morley (1999–2003) and Tess Ramsey (2002–2003). When that program ended, she joined the cast of soap opera General Hospital as possible con woman Samantha “Sam” McCall in September 2003.

In 2003 Monaco was nominated for a Daytime Emmy Award for Supporting Actress in a Drama Series for role on Port Charles. In 2006 Monaco was again nominated for a Daytime Emmy, this time for Outstanding Lead Actress in a Drama Series for her role as Sam McCall on General Hospital.