James McGirr was an Australian politician. He served as premier of New South Wales from 1947 to 1952, holding office as leader of the Australian Labor Party (ALP). He led the party to victory at the 1947 and 1950 New South Wales state elections. He was a pharmacist by profession and the younger brother of Patrick and Greg McGirr, who were also members of parliament; Greg also led the ALP briefly but was never premier.

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.