Frank John Ernaga (August 22, 1930 – April 30, 2018) was an American professional baseball player. An outfielder, he played in 29 games in Major League Baseball during portions of the 1957 and 1958 seasons for the Chicago Cubs. The native of Susanville, California, had a seven-season (1953–1959) pro career. All told, as a major leaguer, Ernaga collected 12 hits (with three doubles, two triples and two homers) and seven runs batted in. He batted .279.