Ali Dayan Hasan, Human Rights Watch's South Asia researcher since 2003, has specialized expertise in Pakistan. Hasan is responsible for researching, authenticating and writing reports, briefing papers and news releases produced by Human Rights Watch on Pakistan. In addition to appearing frequently as a commentator on television, his opinion pieces have appeared in major international media.

Before joining Human Rights Watch, Hasan was a senior editor at Pakistan's premier independent, political news monthly magazine, Herald. During 2006 and 2007, Hasan was also a Visiting Research Fellow at the Leverhulme Changing Character of War Programme at the University of Oxford. He has a B.A. from the London School of Economics and a master's degree from St. Antony's College, Oxford. Hasan speaks Urdu.