Otis Owen Brannan (March 13, 1899 – June 6, 1967), sometimes misspelled Otis Brannon, was a professional baseball player whose playing career spanned 13 seasons, including two in Major League Baseball. Over his major league career, Brannan played for the St. Louis Browns (1928–1929) and batted .249 with 72 runs, 133 hits, 19 doubles, three triples, 11 home runs and 74 runs batted in (RBIs) in 158 games played. Brannan also played in the minor leagues. In the minors, he played for the Class-C Muskogee Athletics (1926), Class-A Tulsa Oilers (1926–1927), the Double-A Hollywood Stars (1930–1933), the Class-D Osceola Indians (1936), the Class-C Hot Springs Bathers (1938), the Class-C Clarksdale Red Sox (1939), the Class-D Lake Charles Skippers (1940), the Class-C Clarksdale Ginners (1941) and the Class-D Lafayette White Sox (1941). Brannan also managed for two seasons in the minor leagues.