Phyllis Glory McDonagh (7 January 1900 – 17 October 1978) was an Australian film producer, production designer and journalist, who often worked in collaboration with her sisters Paulette and Isabella.

She attended school at the Convent of the Sacred Heart, Elizabeth Bay, as a boarder alongside her two sisters Isabella and Paulette.

Phyllis worked as the production manager, and collaborated closely with her younger sister Paulette who would direct and write their majority of their films.

The sisters used the family's colonial home, Drummoyne House, and its antique and elaborate furnishings, to give their films great style at little expense.

[2] She later returned to Sydney with her husband and worked as a freelance journalist and short-story writer, before becoming social editor for the North Shore Times in 1960.