Abu Ubaidah al-Masri (/ɑːl ˈmɑːsri/; Arabic: ابو عبيده المصري‎; died December 2007) was an al-Qaeda operative in Pakistan. Al-Masri was implicated in the 2006 Transatlantic Aircraft Plot, which was to be carried out by a terrorist cell operating in London, but which was orchestrated by al-Qaeda's central leadership.