Jason Raize was born on July 20, 1975. He grew up in upstate New York, eventually moving to Oneonta, and started acting when he was a teenager. In the summer of 1994, Jason performed at the Bucks County Playhouse in La Cage aux Folles, Oklahoma!, The King and I (as Lun Tha), Phantom (title role), and Rocky Horror Show (as Rocky.) Jason has also appeared in Gypsy, West Side Story, Twelfth Night, and in national tours of Jesus Christ Superstar (with Ted Neeley) and Miss Saigon.

Jason appeared on Broadway in The King and I, and is best known on stage for originating the role of Simba in Julie Taymor's The Lion King in 1997. During his time with TLK Jason performed "Endless Night" and "He Lives in You" on The Rosie O'Donnell Show  as well as "Can You Feel the Love Tonight?" on two occasions on Good Morning America.

In September 1998, Jason recorded the Simon & Garfunkel classic "The Sounds of Silence" for a compilation album called The Paul Simon Album: Broadway Sings the Best of Paul Simon. The album also features Christiane Noll, Jose Llana, Lauren Kennedy, Jane Krakowski, and Sal Viviano.

In 1999, Jason organized a benefit for Kosovo refugees at the New Amsterdam Theatre. "E! Fashion Emergency" covered the event.

In October 1999, the United Nations appointed Jason a Goodwill Ambassador "for his commitment and dedication to furthering the cause of the environment through the use of his creative talents to inspire respect for our natural heritage and to promote the conservation and sustainable use of the earth's resources." 

Jason released two singles under Universal Records ("Taste the Tears" and "You Win Again"), both produced by Desmond Child (Ricky Martin's producer.) His debut CD, scheduled to be released by Universal Records, was called NYC but was not officially released. 

In summer 2000, Jason and Jessica Simpson starred in a Disney Channel special called Jessica Simpson and Jason Raize in Concert. The concert was filmed in Disneyland and featured Jason singing "You Win Again," "I Can Make It Without You," and "NYC."

Jason returned to the New York theater scene in January 2001 for a concert performance of Carmen Jones. His made-for-TV-movie The Kitchen aired on PBS the following fall.

That same fall, Jason's television series Keeping It Wild debuted on CBS. This informative show featured Jason on location learning about animals in their natural habitats.

Jason provided the voice of Denahi in the Disney animated feature Brother Bear, released in theaters in fall 2003 and now available on DVD. The film also features Joaquim Phoenix (Signs) as the voice of one of Denahi's two brothers.

For young people starting out as actors, Jason gave the following advice: "First off, involve yourself in any project in your immediate area. That will give you a taste for what you like to do, because there are so many different styles of performance art, and you don't want to do something that ultimately you don't like. After that, find supporters and adults around you, and then make the move to a major performing arts community in the world - usually New York, Los Angeles or Chicago. Then involve yourself in a class, to work with teachers and other actors, but also to introduce you to people doing the same thing you are, and will give you good friends."