Louie[1] Mildred Bickerton Cozens (née Bickerton) (11 August 1902 – 6 June 1998) was a female tennis player from Australia.

She was born in Clifton Hill, Victoria, Australia and won the women's doubles titles at the 1927, 1929, and 1931 Australian Championships.

Perhaps Bickerton's biggest singles victory outside of Australia was her first round defeat of 44-year-old and eight time U.S. champion Molla Bjurstedt Mallory in the first round of Wimbledon in 1928.

Bickerton was friends with Daphne Akhurst Cozens.

In 1935 she married Daphne's widower, Royston Stuckey Cozens, to whom she remained married for 63 years until her death at the age of 95.