John Buchanan Richardson IV (born April 17, 1968) is a United States Army major general who has been the commanding officer of the 1st Cavalry Division since July 21, 2021. He previously served as the Deputy Commanding General of the III Corps from September 2, 2020, to July 2021. Before that, he served as the Deputy Chief of Staff for Operations, Plans, and Training of the United States Army Forces Command. Richardson is a 1991 graduate of the United States Military Academy.