Millicent Preston-Stanley (9 September 1883 – 23 June 1955) was an Australian feminist, and politician who was the first female member of the New South Wales Legislative Assembly.
In 1925 she became the second woman to enter government in Australia.
She was also among the first women in New South Wales to become Justices of the Peace and served as president of the Women Justices Association from 1923 to 1926.
Throughout her life she advocated for women's rights, health reform, and temperance.In 1925 Preston-Stanley became the first female member of the New South Wales Legislative Assembly, representing the Eastern Suburbs as a member of the Nationalist Party, one of the historic predecessor parties to today's Liberal Party.
After a failed bid in the 1921 election she persevered and picked the seat up in May 1925, and held the seat until September 1927.