Alfred Robert "Dad" Clark (July 16, 1873 – July 26, 1956) was an American professional baseball player. Clark played part of one season in Major League Baseball for the Chicago Orphans in 1902. He played in 12 games, collecting 8 hits in 43 at-bats, totaling a batting average. He played for the Monmouth Browns (Illinois-Missouri (minor) League) in 1910. Along with his nickname "Dad", Clark also was known as "Fred", a shortened version of Alfred.