Lorraine Lucy Maltby (born 1960, née Ward)[1][2] OBE FRSB is a British biologist and who is a professor of environmental biology at the University of Sheffield.

[3][4] She serves as deputy Vice-President for research and innovation and chair of the board of trustees of the Freshwater Habitats Trust.

Her research investigates interactions in the riparian zone and the environmental impacts of agri-plastics.

[6] Maltby joined the Faculty at the University of Sheffield in 1988, and was appointed a professor in 2004 and served as head of department from 2008.

She has been part of the UK Research and Innovation (UKRI) activity around sustainable plastics in agriculture.