Dymphna Cusack AM (21 September 1902 — 19 October 1981) was an Australian author. Born in West Wyalong, New South Wales, Dymphna Cusack was educated at St Ursula's College, and graduated from Sydney University with an honours degree in Arts and a diploma in Education. She worked as a teacher until she retired in 1944 for health reasons. Cusack wrote twelve novels (two of which were collaborations), seven plays, three travel books, two children's books and one non-fiction book. Her collaborative novels were Pioneers on Parade (1939) with Miles Franklin, and Come In Spinner (1951) with Florence James.