Jonathan Taylor Thomas was born on September 8, 1981 in Bethlehem, Pennsylvania. Growing up, he liked the music group Boyz II Men, and his favorite TV shows were Roseanne and Grace Under Fire, but he also liked watching CNN news, to keep up to date with current events. One thing that Jonathan does not like is meat. He has been a vegetarian since he was four years old, and he doesn't use products that are tested on animals because he believes that it is wrong to hurt them.

When Jonathan was four years old, his family (his mother Claudine, his father Stephen and his older brother Joel) moved from Bethlehem to Sacramento, California. At the age of seven, Jonathan was working as a model for print advertisements in Sacramento, and over the next few years, he appeared in TV commercials for Kelloggs cereal, Mattel toys and for many other products. By this time, Jonathan was ready for bigger roles, and in 1989, he landed the part of Greg Brady's son Kevin in the TV special The Bradys. In 1990, he landed his biggest role yet, as Randy Taylor on Home Improvement. Jonathan's audition went well, but what really gave him an edge over the other boys was that the casting directors thought that he looked a lot like his TV dad-to-be, Tim Allen.

In 1991, Jonathan's parents divorced. He lived with his mother and his brother. He began work in feature length movies, as the voice of young Simba in Disney's The Lion King, and as Ben Archer in _Man of the House (1994) opposite Chevy Chase. Among his other movies are Tom and Huck and The Adventures of Pinocchio.
Is pro-life. He did a voice-over for a baby in an anti-abortion special, which gave out information on alternatives to abortions, such as adoption and charity care. Visited Northwestern University, Evanston, Illinois, as a possible college to attend. Doesn't like the nickname JTT. He doesn't understand why people just can't say his whole name. Is a health freak and a vegetarian. Loves to play sports. Loves fishing. Has done voice overs for cartoons and video games such as The Itsy Bitsy Spider, The Adventures of Spot, The Ivy Cottage, and Scooter's Magic Castle. Has one brother, Joel Thomas Weiss. His stage name is derived from his real first name (Jonathan), his real middle name (Taylor), and his brother's middle name (Thomas). Received 1996 NATO/ShoWest YoungStar of the Year Award [1996] Loves to watch college basketball. Likes to collect basketball shoes. Featured on the cover of The Advocate, a gay and lesbian magazine. Studying History and Philosophy at Harvard. [Fall 2001] Parents: Claudine and Stephen Weiss Graduated from Chaminade College Preparatory High School in West Hills, California with honors [2000] Was the first actor to win the Lifetime Achievement Award at the Nickelodeon Kids' Choice Awards '99 for his memorable nine year role as "Randy Taylor" on Home Improvement. Attended Harvard University. Pets: two cats named Simba and Samantha, one dog called McCormick Ranked #25 in VH1's list of the "100 Greatest Kid Stars" He collects Autographs of his favorite sports stars. He uses barbless hooks when he fishes because it is more of a challenge. Grew up in Sacramento and Los Angeles, California