Siobhan O'Sullivan is an Australian political scientist and political theorist who is currently a lecturer in the School of Social Sciences, University of New South Wales. Her research has focused, among other things, on animal welfare policy and the welfare state. She is the author of Animals, Equality and Democracy (2011, Palgrave Macmillan) and a coauthor of Getting Welfare to Work (2015, Oxford University Press). She co-edited Contracting-out Welfare Services (2015, Wiley) and The Political Turn in Animal Ethics (2016, Rowman & Littlefield International). She produces a regular podcast entitled Knowing Animals.