John Andrew Light (born 30 September 1973) is an English television, theatre, and film actor. He has received a Laurence Olivier Award nomination for his supporting performance in the play Taken at Midnight (2014).
Light appeared as Henry Lennox (with Richard Armitage and Daniela Denby-Ashe) in the BBC production North and South from the novel by Elizabeth Gaskell. He played the title character (the son of Rudyard Kipling) in the original National Theatre production of David Haig's My Boy Jack (1997).
An early screen role came in Cider with Rosie (1998). He portrayed British pilot Robert Newman in the German film Dresden, in which he spoke German; and played Geoffrey, Duke of Brittany in the 2003 film The Lion in Winter alongside Patrick Stewart, Glenn Close and Jonathan Rhys-Meyers. He played Satan in two films released in 2005 which were titled The Prophecy: Uprising and The Prophecy: Forsaken. He also appeared in the title role of the 2009 play A New World: A Life of Thomas Paine.