Jeffrey Turner Lyman (born January 14, 1987 in San Francisco, California) is a minor league baseball pitcher in the Oakland Athletics organization. Lyman was drafted by the Atlanta Braves in the 2nd round of the 2005 Major League Baseball Draft. He was added to the 40-man roster after the 2009 season to protect him from the Rule 5 Draft. On July 2, 2010, Lyman was claimed off waivers from Atlanta by Oakland.