Peter Albert David Singer (born July 6, 1946 in Melbourne, Victoria, Australia) is an Australian philosopher. He is the Ira W. DeCamp Professor of Bioethics at Princeton University, and laureate professor at the Centre for Applied Philosophy and Public Ethics (CAPPE), University of Melbourne. He specializes in practical ethics, approaching ethical issues from a preference utilitarian and atheistic perspective.
He has served, on two occasions, as chair of philosophy at Monash University, where he founded its Centre for Human Bioethics. In 1996, he ran unsuccessfully as a Green candidate for the Australian Senate. In 2004, he was recognized as the Australian Humanist of the Year by the Council of Australian Humanist Societies.
Outside academic circles, Singer is best known for his book Animal Liberation, widely regarded as the touchstone of the animal liberation movement. His views on questions in bioethics have also attracted attention and controversy, particularly in the United States, Canada and Germany.
