Jenna Jameson (born Jenna Marie Massoli on April 9, 1974) is an American pornographic actress and entrepreneur who has been called the world's most famous porn star and "The Queen of Porn". She started acting in erotic films in 1993 after having worked as a stripper and glamour model. By 1996, she had won the three top newcomer awards from pornographic film industry organizations. She has since won more than 20 adult film awards, and has been inducted into both the X-Rated Critics Organization (XRCO) and Adult Video News (AVN) Halls of Fame.

Jameson founded pornographic entertainment company ClubJenna in 2000 with Jay Grdina, whom she later married. Initially an individual website, this business expanded into managing similar websites of other stars and began producing pornographic films in 2001. The first such film, Briana Loves Jenna (with Briana Banks), was named at the 2003 AVN Awards as the best-selling and best-renting pornographic title for 2002. By 2005, Club Jenna had revenues of US$30 million with profits estimated at half that. Advertisements for her site and films, often bearing her picture, have towered on a forty-eight-foot-tall billboard in New York City's Times Square. Playboy TV hosts her Jenna's American Sex Star reality show where aspiring porn stars compete for a Club Jenna contract.