Peter T. Brown was the Executive Director of the Free Software Foundation (FSF) from 2001 until early 2011. He began working for the organization as a controller, and was promoted to Executive Director in 2005 after the departure of Bradley Kuhn. He was replaced by William John Sullivan. He has since joined the Software Freedom Conservancy as a director and treasurer. He is from Oxford, England, and has worked in the past for the BBC and the New Internationalist.
A video which includes Peter T. Brown is available on Wikimedia Commons.