Moses Henry Cass was an Australian doctor and politician who held ministerial office in the Whitlam government. He served as Minister for Environment and Conservation (1972–1975), the Environment (1975), and the Media (1975). He represented the Division of Maribyrnong in the House of Representatives from 1969 to 1983.

The Division of Maribyrnong is an Australian electoral division in the state of Victoria. It is located in the inner north-western suburbs of Melbourne. Suburbs include Aberfeldie, Airport West, Avondale Heights, Essendon, Footscray, Gowanbrae, Keilor East, Maribyrnong, Moonee Ponds, Niddrie, West Footscray and Tullamarine. Due to redistributions, the division has been slowly moving west and changed with the introduction of the Division of Fraser in 2018. According to the 2011 census, Maribyrnong has the highest proportion of Catholics in any Commonwealth Electoral Division in Australia with 41.6% of the population.