Catherine Disher is a British-born Canadian actress. She has won two Gemini Awards: in 2005 for Best Actress for her role in the Canadian mini-series Snakes and Ladders, and in 2010 for her role in The Border. She was also nominated for her role as Dr. Natalie Lambert in the Forever Knight TV series.

Disher had a supporting role on T. and T., the legal/action series starring Mr. T, and had another supporting role in the second season of the War of the Worlds series. She starred in Forever Knight from 1992 to 1996, and provided the voice of Jean Grey on the X-Men animated series from 1992 to 1997. She played Maggie Norton on the Canadian television series The Border from 2008 to 2010 and provides additional voices on the PBS Kids/CBC Kids series Super Why!.

Apart from her work as an actor, Disher has done voice work for animated series and video games, such as Resident Evil 3: Nemesis and Sailor Moon. She also wrote one episode of the British-Canadian-Midwestern-French drama series The Campbells.

Disher played Martha Tinsdale in a series of made-for-TV movies about The Good Witch (alongside her X-Men co-star Chris Potter), and has continued the role on the television series Good Witch until the TV series ended in July 2021.

She was formerly married to her X-Men co-star Cedric Smith, with whom she had a son in 1993.^{[citation needed]}