Ryan John Currier (born November 26, 1972), better known as Ryan Robbins, is a Canadian actor. He was born in Victoria, British Columbia. He is known for his roles as Ladon Radim in Stargate Atlantis, Henry Foss on Sanctuary and is the only actor to have played two different characters (not counting different incarnations of Cylon models as different characters) in the re-imagined Battlestar Galactica, having originally starred in the 2003 Battlestar Galactica miniseries, with heavy makeup and prosthetics to age him, as the Colonial officer assigned to Armistice Station, followed by a recurring role as Charlie Connor in the third and fourth seasons of the Battlestar Galactica 2004–2009 TV series He later played Diego in the 2010 Battlestar Galactica prequel series Caprica.
He has also guest starred in the TV series jPod as Alistair Parish and as Wendell on the Canadian series The Guard. In 2011 he played the role of John Grey in the film Apollo 18. He starred as Rand in Riese, Brad Tonkin in seasons 3 and 4 of Continuum and Tector in Falling Skies. In 2015 he had a recurring role on Arrow. He has a lead role in the Canadian series Pure.
In 2019, Robbins was cast as Frank Andrews in the television series Riverdale