Barry Lee Lersch (September 7, 1944 – October 4, 2009) was an American professional baseball pitcher who played Major League Baseball (MLB) for the Philadelphia Phillies (1969–1973) and St. Louis Cardinals in (1974). A right-hander, he was born in Denver, Colorado and was listed as 6 feet (1.8 m) tall and 175 pounds (79 kg) and attended East High School in Denver, Colorado. Lersch died of a heart attack on October 4, 2009, in Aurora, Colorado. He was 65; his body was donated to medical science.