Maureen Kathleen Stewart Forrester, CC OQ (July 25, 1930 – June 16, 2010) was a Canadian operatic contralto.

She paid for voice lessons with Sally Martin, Frank Rowe, and baritone Bernard Diamant.

In the spring of 1951, Forrester appeared on the CBC radio talent competition Opportunity Knocks, singing "Ombra mai fu", and describing herself to the host as a "starving musician" and part-time switchboard operator.

[2] She was ultimately named first runner-up, and later competed on the similar shows Singing Stars of Tomorrow, and Nos Futures Étoiles.

At the New York City Opera, she sang Cornelia in Handel's Giulio Cesare (1966),[7] opposite Norman Treigle and Beverly Sills, which was recorded by RCA in 1967.

A notable example is composer Donald Steven, whose work "Pages of Solitary Delights" (winner of the 1987 Juno Award for Classical Composition of the Year) was written for Ms. Forrester.