Chase Masterson (born Christianne Carafano on 26 February 1963 in Colorado Springs, Colorado) is an American actress. She is best known for portraying the Bajoran Leeta on Star Trek: Deep Space Nine from 1995 to 1999, and for playing Ivy Lief on General Hospital. Other notable appearances include guest starring roles on Sliders (as Kelly, the sister of Wade Welles) and ER. Masterson co-starred in the 1993 erotic feature Married People, Single Sex. In 1995, Masterson made the low-budget sci-fi film Digital Man, in which she appeared in an on screen nude scene opposite co-star Don Swayze.

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 2004-2005. She is also a singer of jazz/torch songs who has released an album entitled Thrill of the Chase, the follow-up EP AD ASTRA! (Latin for "To the Stars!"), and the limited edition Crystal Anniversary: Songs From the Holosui