Sir Keith Arthur Murdoch was an Australian journalist and newspaper proprietor who was the founder of the Murdoch media empire. He amassed significant media holdings in Australia which after his death were expanded globally by his son Rupert.

Members of the Murdoch family are prominent international media magnates and media tycoons with roots in Australia and the United Kingdom, along with their media assets in the United States. Some members have also been prominent in the arts, clergy, and military.