Brad Michael Keller (born July 27, 1995) is an American professional baseball pitcher in the Chicago White Sox organization. He has previously played in Major League Baseball (MLB) for the Kansas City Royals, with whom he debuted in 2018. Listed at 6 feet 5 inches (1.96 m) and 230 pounds (100 kg), he both throws and bats right-handed.
He was drafted by the Arizona Diamondbacks in the eighth round of the 2013 Major League Baseball Draft.
Keller made his professional debut that year with the Arizona League Diamondbacks and was later promoted to the Missoula Osprey. Keller made the 25-man roster for the Royals in 2018, and had his MLB debut on Opening Day, March 29.