Mary Anne Lockwood (1858–1938) was an Australian activist engaged in the temperance and suffrage movements.

In 1892, she was elected first president of the Yorke Peninsula District Union, holding that position for six years, until her removal to Adelaide.

[1] At the Triennial Convention held in Queensland in 1897, she was elected honorary corresponding secretary of the Australasian WCTU, and at the same time, assistant editor and business manager of Our Federation, the official organ of that Union.

In 1903, she was elected State secretary of the South Australian WCTU, and participated in the campaigns which secured six o’clock closing of drinking bars, the suffrage for women, and Local Option Polls.

Located in the central street of the city, the property served as the headquarters of the South Australian WCTU, and included ample office accommodations and residential quarters for travelers.