Frank Alfred Linzy (born September 15, 1940) is an American former professional baseball player, used almost exclusively as a relief pitcher. Over the course of his Major League Baseball (MLB) career, Linzy played for the San Francisco Giants (1963; 1965–1970), St. Louis Cardinals (1970–1971), Milwaukee Brewers (1972–1973), and Philadelphia Phillies (1974). He batted and threw right-handed.