John M. O'Bannon III (born February 14, 1948) is an American politician of the Republican Party as well as a practicing physician. From 2001 to 2018, he was a member of the Virginia House of Delegates. He represented the 73rd district, made up of parts of the city of Richmond and Henrico County. O'Bannon was born in Richmond, Virginia. He received his medical degree from the Medical College of Virginia (now officially known as Virginia Commonwealth University School of Medicine) in 1973 and is board certified in neurology. With his wife, Patricia, he has three children: John H. O'Bannon, Virginia Deasy, and Andrew O'Bannon. He was a member of the committees on Appropriations, Health, Welfare and Institutions, and Privileges and Elections.