Len Kasper is an American sportscaster. As of 2021 he is the radio play-by-play announcer for the Chicago White Sox of Major League Baseball, teaming with color analyst Darrin Jackson on ESPN 1000 and the Chicago White Sox Radio Network. From 2005 to 2020, Kasper worked alongside analysts Bob Brenly and Jim Deshaies on Chicago Cubs telecasts. He also joined the team's radio network for the fifth inning of games that were televised nationally (including playoff games), working with regular radio announcers Pat Hughes and Ron Coomer.