An American entrepreneur and former pornographic actress, who has been called the world's most famous adult-entertainment performer and "The Queen of Porn." She started acting in erotic videos in 1993 after having worked as a stripper and glamour model. By 1996, she had won the "top newcomer" award from each of the three major adult movie organizations. She has since won more than 20 adult video awards, and has been inducted into both the X-Rated Critics organisation (XRCO) and Adult Video News (AVN) Halls of Fame.

Jameson founded the adult-entertainment company ClubJenna in 2000 with Jay Grdina, whom she later married and divorced. Initially a single website, this business expanded into managing similar websites of other stars and began producing sexually explicit videos in 2001. The first such movie, 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, ClubJenna 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 48-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.