The deputy premier of Victoria is the second-most senior officer in the Government of Victoria. The deputy premier position was created in May 1932, with Robert Menzies being the first person to hold the position. The deputy premier is appointed by the Governor on the advice of the premier. The deputy premier is usually also a minister in the government.

Sir Robert Gordon Menzies was an Australian politician and lawyer who served as the 12th prime minister of Australia from 1939 to 1941 and 1949 to 1966. He held office as the leader of the United Australia Party (UAP) in his first term, and subsequently as the inaugural leader of the Liberal Party of Australia, which he was responsible for establishing and defining in policy and political outreach. He is the longest-serving prime minister in Australian history.