Jonathan Taylor Thomas (born September 8, 1981) is an American actor, former child star, and teen idol. He is well known for his role of middle child Randy Taylor on the sitcom Home Improvement and as the voice of the young Simba in Disney's The Lion King.
Thomas was born Jonathan Taylor Weiss in Bethlehem, Pennsylvania, the son of Claudine Weiss (née Gonsalves), a personal manager and social worker, and Stephen Weiss, an industrial sales manager; the two divorced in 1989. Thomas has part Portuguese ancestry. He has a brother named Joel Thomas Weiss, whose middle name he adopted as his pseudonym, in order to avoid confusion with an existing actor named Jonathan Weiss. He was widely known by his initials "JTT". In 1986, Thomas moved with his family to Sacramento, California, and was later cast in a Burger King commercial at the age of eight.
In 1990, Thomas garnered the role of Kevin Brady, the son of Greg Brady, on the short-lived TV show The Bradys, a spin-off of the 1970s TV show The Brady Bunch. In 1991, at the age of 10, he won the role of Randall William "Randy" Taylor on the television show Home Improvement. He remained with Home Improvement well into his teenage years, but left the show in 1998 in order to concentrate more on his academics. He served as guest timekeeper for WWE's WrestleMania XI in 1995. During his run on Home Improvement, Thomas voiced the role of young Simba in the 1994 Disney film The Lion King.