Robert Maxey McNamara (September 19, 1916 – March 9, 2011) was an infielder in Major League Baseball, playing mainly at shortstop for the Philadelphia Athletics in the 1939 season. Listed at 5'10", 170 lb., He batted right-handed.
Born in Denver, Colorado, McNamara was one of many baseball players whose professional career was interrupted during World War II.
McNamara debuted with the Athletics of Connie Mack in 1939. In his first major league at-bat, against the New York Yankees, he drilled a single off Lefty Gomez at Yankee Stadium. Overall, he appeared in nine games, batting a .222 average (2-for-9) with one double and three runs batted in, including a walk and a strikeout with no home runs. He also played three minor league seasons, being managed by Rogers Hornsby and Pepper Martin, among others.
McNamara died in Rancho Bernardo, California, at the age of 94. At the time of his death he was recognized as the ninth oldest living major league player.