Marcel Van Minh Phuc Long Nguyen (born 8 September 1987) is a German artistic gymnast and three-time Olympian, having represented Germany at the 2008, 2012, and 2016 Olympic Games. He is the 2012 Olympic silver medalist in the all-around and on parallel bars as well as the 2011 and 2012 European Champion on the latter. He has been a soldier in the Bundeswehr (German military) since July 2007, beginning when he was training in the Bundeswehr Sports Development Group (Sportfördergruppe der Bundeswehr) in Munich.