Catherine Elizabeth O'Toole (born 30 August 1956) is an Australian former politician.

O'Toole and her husband Dennis later bought out her mother's stake in the business,[2] and ran local family-owned small businesses including hairdressers, a news agency, and vocational training organisation.

[3][4] From 1988 to 2002, O'Toole was involved in vocational training organisations: from 1988 to 1991, O'Toole was a teacher at Townsville College of TAFE and Kangaroo College of TAFE, and from 1991 to 1993 was Program Manager of Curriculum Design at Townsville TAFE; O'Toole was an Associate at the Tropical Industry Training Associates from 1994 to 1995, then from 1996 to 1997 was Manager; In 1996, she was owner and Director of O'Toole Enterprises; and, from 1997 to 2000, was managing director and owner of Future Skills & Training.

[citation needed] O'Toole is married to Dennis, and they have three adult children.

In February 2016 she was part of a protest, about the treatment of refugees, outside the office of the sitting Liberal National Party MP Ewen Jones.