Walter Allen Blair, nicknamed "Heavy", was an American catcher in Major League Baseball player born in Landrus, Pennsylvania who, after attending Bucknell University, played as a backup catcher for the New York Highlanders from 1907 through 1911. He later got his chance to play regularly when played for the Buffalo Buffeds/Blues of the Federal League during their only two seasons in 1914 and 1915. It was for this team that he did appear as manager for two games, a doubleheader played on June 4, 1915, his team won one and lost one.