Leslie Fletchard "Bill" Fleming (July 31, 1913 – June 4, 2006) was an American professional baseball pitcher.

A right-hander, the native of Rowland Heights, California, stood 6 feet (1.83 m) tall and weighed 190 pounds (86 kg), and attended Saint Mary's College of California.

His professional career lasted for 16 seasons between 1936 and 1953, missing the 1945 campaign because of service in the United States Army during World War II.

In his MLB career, Fleming posted a 16–21 win–loss record with a 3.79 earned run average and 167 strikeouts in 123 games pitched (40 as a starter).

This biographical article relating to an American baseball pitcher born in the 1910s is a stub.