Stacy Jefferson is a British actress born on 7 April 1946, known for her extensive work in voice acting, particularly in English-language dubs of anime and animated series during the 1990s. Her career spans several decades, with a significant body of work in television and film.

Jefferson's involvement in anime voice acting is notable for her roles in various series and films from the early 1990s. In 1991, she provided the voice for the character Rosa in the English adaptation of the series Dark Warrior. That same year, she also voiced Linna in the 1996 dub of the series Bubblegum Crash. Her other prominent anime roles from this period include Mirei in Tokyo Babylon (1992) and Hinoto in X: The Movie (1996). Earlier in her career, she voiced the lead character Magami Eiko, also known as A-Ko, in the English version of the classic 1986 anime film Project A-Ko.

In addition to her anime work, Jefferson contributed voices to several other animated productions. She is recognized for voicing Tooticky in the Moomin TV series (1990) and provided voices for Kumba in The Fruitties (1990-1991). She also had a significant role in the acclaimed animated series The Animals of Farthing Wood (1993), where she voiced both Adder and Vixen. Her filmography demonstrates recurring work in the voice acting industry, often for English adaptations of international productions.