Gillian Shirley Wratt MNZM (born 1954) is a New Zealand botanist and science administrator.

A DSIR study award enabled her to gain a master's degree in Business Administration from the University of Sydney (1990).

[3] She has also held a number of advisory positions relating to Antarctic science and operations including Chair of the Council of Managers of National Antarctic Programs (COMNAP), 1998–2002,[4] Vice Chair of Antarctic Treaty Committee on Environmental Protection, 1998–2001; Chair of the Cape Roberts Project Operations Management Group, 1993–2001.

She has worked in a range of scientific and environmental management roles in addition to her Antarctic roles, including environment negotiator for New Zealand free trade agreements, and establishment unit convenor for the Crop and Food Research Institute.

Notably, Wratt was chief executive of the not-for-profit Cawthron Institute during 2006–2012.