Chase Masterson (born Christianne Carafano on 26 February 1963 in Colorado Springs, Colorado) is an American actress, best known for portraying sexy, lively Bajoran Dabo girl Leeta on Star Trek: Deep Space Nine and Ivy Lief on General Hospital. Other notable appearances include guest starring roles on Sliders (as Kelly, the sister of Wade Welles) and ER.

Masterson hosted an Entertainment Tonight-style news program for the Sci Fi Channel in the 1990s and an Internet-based radio talk show for the website The Fandom in 2004-05. She is also a singer of jazz/torch songs who has released two albums entitled The Thrill of the Chase, with a follow-up release Ad Astra, (To the Stars in Latin). Other current projects include providing the voice of a character in the anime film Robotech: The Shadow Chronicles (sequel to the original Robotech series of the 1980s), and starring in James Kerwin's upcoming sci-fi noir film Yesterday Was a Lie.

In 2003 Masterson was named one of the "50 Sexiest Women of the Year" by popular men's magazine Femme Fatales (she holds the distinction of being the only actress to appear on the cover twice in the publication's history). Despite her limited run on DS9, numerous fan surveys have shown her to be the most popular guest at Star Trek conventions over the years. TV Guide Online named Masterson the "Number One Favorite Science Fiction Actress on Television" following a reader's poll.

 

Following a series of stalking incidents instigated by an enamored fan in Berlin, Masterson was the plaintiff in Carafano v. Metrosplash.com, a controversial legal case in which the courts ruled against Masterson and expanded the definition of "interactive computer services" under the Communications Decency Act.  (This is a example of the stupidity of our court system)  Matchmaker.com should be boycotted.)