Christiane Susanne Augustine "Augusta" Zadow (née Hofmeyer; 27 August 1846 – 7 July 1896) was a German-Australian trade unionist.
She was born in Runkel in the Duchy of Nassau, she was educated at the Ladies' Seminary, Biebrich-on-Rhine, and following her studies became a governess. By 1868 she was working as a tailoress in London, England. She met her husband Christian Wilhelm Zadow, a tailor and political refugee from Germany, in London and the pair married in 1871 and travelled to Australia with their young son on the Robert Lees, arriving in Adelaide, South Australia, in 1877.
In Adelaide, Zadow became an advocate for women working in clothing factories. She was a major contributor to the establishment of the Working Women's Trades Union in 1890 and was a delegate to the United Trades and Labour Council of South Australia. Mary Lee, David Charleston and Zadow prepared a list of fair wages and prices for use in Adelaide.
Following the franchise of women in South Australia in 1894, she was appointed a factory inspector by the government of Charles Kingston. She inspected factories and monitored working conditions for women and minors.
- Jones, H. Zadow, Christiane Susanne Augustine (Augusta) (1846–1896), Australian Dictionary of Biography, Volume 12, Melbourne University Press, 1990, p. 604.