Rosemary Ann Du Plessis ONZM is a New Zealand academic sociologist, and is an adjunct associate professor at the University of Canterbury.

[1][2] Du Plessis has worked at the University of Canterbury since 1974, and as of 2024 is an adjunct associate professor in the Sociology, Anthropology and Human Services Department of the Faculty of Arts.

[4][2] Du Plessis has research interests in gender, family and paid and unpaid work, and ethical implications of new technologies.

[5][3] She led a multidisciplinary study into genetic testing and biobanking, and an oral history project recording women's stories about the Canterbury earthquakes.

Women, Work and Emotion, a social history book by Barbara Brookes, Angela Wanhalla and Jane McCabe, in Dunedin.