Dr (Edgar) John Hughes CBE, FRSA, FLSW (born 27 July 1947) is a retired British diplomat and former British Ambassador to Venezuela, Argentina and Paraguay. In retirement, he has been a governor of Atlantic College, Chair of the Marshall Aid Commemoration Commission and Chair of Canning House. He is currently Chair of the British Argentine Chamber of Commerce and of Latamconsult. Hughes has also held Fellowships in London University, including as a Senior Fellow at the London School of Economics and as Professor in Practice at LSE Ideas.