Margaret Isabel Rideout (née Saunders; 16 June 1923 – 12 May 2010) was a Canadian politician, who represented the electoral district of Westmorland in the House of Commons of Canada from 1964 to 1968.
She was born to parents Vance and Dolena (McRae) Saunders of Bridgewater.
She served in that role until the 1968 election, when she was defeated by Charlie Thomas in the redistricted riding of Moncton.
She received the Muriel McQueen Fergusson Award in New Brunswick for her work for women.
[2] Margaret Rideout was the "public face of the Atlantic Division’s successful campaign to improve drug coverage to Newfoundland and Labrador".