Peter Dain Suber is an American philosopher specializing in the philosophy of law and open access to knowledge. He is a Senior Researcher at the Berkman Klein Center for Internet & Society, Director of the Harvard Office for Scholarly Communication, and Director of the Harvard Open Access Project (HOAP). Suber is known as a leading voice in the open access movement, and as the creator of the game Nomic.

Open access (OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. With open access strictly defined, or libre open access, barriers to copying or reuse are also reduced or removed by applying an open license for copyright.