Frank Julián Arellanes [ah-ray-yah'-ness] (January 28, 1882 – December 13, 1918) was an American professional baseball starting pitcher. He played three seasons in Major League Baseball for the Boston Red Sox from 1908 through 1910. Listed at 6 ft 0 in (1.83 m), 180 pounds (82 kg), he batted and threw right-handed.