Who was the first women's singles champion at the Australasian Championships in 1922?

Margaret Molesworth was the first women's singles champion at the 1922 Australasian Championships. She defeated fellow Australian Esna Boyd 6–3, 10–8 in the inaugural women's singles final.

The 1922 tournament, held at the White City Tennis Club in Sydney, was the first edition to include women's singles, women's doubles and mixed doubles. Molesworth successfully defended her title in 1923, again beating Boyd in the final. Her achievement established her as one of the leading Australian women players of the period.

The tournament was then known as the Australasian Championships; it became the Australian Championships in 1927 and adopted the name Australian Open in 1969. Daphne Akhurst did not win the first edition: she became champion in 1925 and 1926. Sylvia Lance Harper was the 1923 runner-up, while Esna Boyd was Molesworth's opponent in the inaugural final. Molesworth later won three Australian Championships women's doubles titles and became the first Australian woman listed in a world top-ten ranking.