Donald Rooum (born 20 April 1928) is an English anarchistcartoonist and writer. He has a long association with Freedom Press who have published seven volumes of his Wildcat cartoons.
Donald Rooum was born in Bradford. He registered as a conscientious objector but was pressurised by his family into doing two years military service, starting January 1947. A resettlement grant following his discharge allowed him to study commercial design at Bradford Regional Art School from 1949 to 1953. Rooum's portrait by Frank Lisle, one of his lecturers of the time, is in Wakefield Gallery.
From 1954 to 1966 Rooum worked as a layout artist and typographer in London advertising agencies, then as a lecturer in typographic design at the London College of Printing until 1983. He studied life sciences at the Open University from 1973 to 1979, and was awarded a first class degree in 1980. He was elected Member of the Institute of Biology (incorporated into the Society of Biology in October 2009) and became a chartered biologist in 2004.