Michael Andrew Fox, known professionally as Michael J. Fox, is a Canadian and American actor and activist. Beginning his career as a child actor in the 1970s, he rose to prominence portraying Alex P. Keaton on the NBC sitcom Family Ties (1982–1989) and Marty McFly in the Back to the Future film trilogy (1985–1990). Fox went on to star in films such as Teen Wolf (1985), The Secret of My Success (1987), Casualties of War (1989), Doc Hollywood (1991) and The Frighteners (1996). He returned to television on the ABC sitcom Spin City in the lead role of Mike Flaherty (1996–2000).
In 1998, Fox disclosed his 1991 diagnosis of Parkinson's disease (PD). He became an advocate for finding a cure and founded The Michael J. Fox Foundation in 2000 to help fund research. Worsening symptoms forced him to reduce his acting work.
Fox voiced the lead roles in the Stuart Little films (1999–2005) and the animated film Atlantis: The Lost Empire (2001). He continued to make guest appearances on television, including comedy-drama Rescue Me (2009), the legal drama The Good Wife (2010–2016) and spin-off The Good Fight (2020) and the comedy series Curb Your Enthusiasm (2011, 2017).