Robert Jack Darnell (November 6, 1930 – January 3, 1995) was an American professional baseball pitcher who appeared in seven games in Major League Baseball during the 1954 and 1956 seasons for the Brooklyn Dodgers. The right-hander, a native of Wewoka, Oklahoma, was listed as 5 feet 10 inches (1.78 m) tall and 175 pounds (79 kg).