Montgomery was born in Winnipeg, Manitoba. Her siblings are actor Lee Harcourt Montgomery and actress Tannis G. Montgomery. 　　Montgomery, who sometimes added the initial "J." to her acting name, has made over 80 guest appearances on television, including appearances on Ironside, T. J. Hooker, Dynasty, L.A. Law, JAG, Mannix, Magnum, P.I., The Sixth Sense, The Virginian and Ghost Whisperer, among other series. 　　Before pursuing an acting career, she was a watercolor painter. She sold her first art piece at the age 10. She continues to paint along with acting. Many of her art pieces are featured on her official website. 　　In March 2013, writing under the pen name B. Montgomery, Belinda submitted a short story "St. Patrick of the Pineapple" to Midlife Collage, an online writing contest. Montgomery's story won first place in the contest.