William Arthur Holman was an Australian politician who served as Premier of New South Wales from 1913 to 1920. He came to office as the leader of the Labor Party, but was expelled from the party in the split of 1916. He subsequently became the inaugural leader of the NSW branch of the Nationalist Party.

The premier of New South Wales is the head of government in the state of New South Wales, Australia. The Government of New South Wales follows the Westminster Parliamentary System, with a Parliament of New South Wales acting as the legislature. The premier is appointed by the Governor of New South Wales, and by modern convention holds office by their ability to command the support of a majority of members of the lower house of Parliament, the Legislative Assembly.