Grant Williamson is a landscape ecologist and spatial scientist, whose research investigates the climatic and human drivers of wildfires and fire danger across Australia, and the dynamics and human health impact of smoke wildfires and prescribed fires on human health.

He completed his PhD at the University of Adelaide, and has worked in Darwin and Hobart, and is currently a postdoctoral fellow for the Centre for Air Quality & Health Research and Evaluation (CAR-CRE) at University of Tasmania.