Walter S. "Rube" Manning (April 29, 1883 – April 23, 1930) was an American Major League Baseballpitcher from 1907 to 1910.
Manning started his professional baseball career in 1906. He pitched for the Williamsport Millionaires of the Tri-State League for two years before being purchased by the New York Highlanders. In his first major league season, he went 13–16 with a 2.45 earned run average. Manning continued to pitch for New York through 1910. He then pitched in the minors until 1917.[1]