Michael Otsuka (born September 15, 1964) is Professor of Philosophy at University College London. He previously taught at UCLA and the University of Colorado. He has written extensively in political philosophy on topics such as equality and left-libertarianism. Otsuka is a proponent of actual-consent forms of government, in opposition to the main-stream of political theory which has thought such systems to be unworkable. He has also published articles in normative ethics on the morality of harming and saving from harm.
Otsuka earned his DPhil in Politics from Balliol College, Oxford under the direction of G.A. Cohen.