Alexander Mair was an Australian politician and served as the Premier of New South Wales from 5 August 1939 to 16 May 1941. Born in Melbourne, working in various businesses, Mair moved to Albury, New South Wales and went on to be a member of the New South Wales Legislative Assembly for fourteen years. In 1932, Mair was elected to the seat of Albury and went on to be re-elected a further four times. He rose quickly through the cabinet of Bertram Stevens' United Australia Party government, becoming an Assistant Minister in April 1938, Minister for Labour and Industry in June and Colonial Treasurer in October.
A staunch supporter of Stevens throughout his Premiership, Mair became his successor as Premier in August 1939 following Stevens' defeat in a no-confidence motion moved by renegade Minister, Eric Spooner. Becoming Premier at a difficult time for the government, Mair's leadership was marked by his unification of his formerly fractious party, the reining-in of government expenditure and increased taxes to reduce debt, and new labor laws to reduce unemployment. When the Second World War broke out in September 1939, Mair mobilised the state towards the war effort but found it difficult to communicate his message to the voters. He served as Premier until losing the May 1941 election to the Labor Party under William McKell, losing 20 seats.