Margaret Coen (4 April 1909 – 27 August 1993) was an Australian artist, known for her watercolours, paintings of flowers, landscapes and still life works.

She attended Kincoppal Convent in Elizabeth Bay where she studied drawing with Antonio Dattilo-Rubbo.

[3][4] Coen worked as a commercial artist while continuing to attend art classes in the evenings.

Coen was made an Honorary Life Member of the Australian Watercolor Institute.

[14] Coen married Australian poet Douglas Stewart on 5 December 1945 at the Church of Our Lady of the Sacred Heart in Randwick.