Lilian Violet Cooper (1861-1947) was a medical practitioner in Queensland, Australia. She was the first female doctor registered in Queensland.
During World War I Cooper volunteered with the Scottish Women's Hospital Service after was she was turned down by the Australian Army as female doctors were not wanted. She assisted people on the front line in France and Serbia and was in charge of the ambulance division, with all female drivers (including her close friend Mary Josephine Bedford). Operating in tents close to the front line, Cooper was later awarded the Order of St Sava from the Serbian King for her wartime efforts.
Lilian Violet Cooper died on August 18, 1947 and is buried next to her long-time companion Mary Josephine Bedford at Toowong Cemetery, Brisbane, Queensland, Australia.