George William Casey Jr. (born July 22, 1948) is a retired four-star general who served as the 36th Chief of Staff of the United States Army from April 10, 2007, to April 10, 2011. He served as Commanding General, Multi-National Force – Iraq from June 2004 to February 8, 2007, and was in the army for his entire adult working life. He now resides in Arlington, Virginia.