Eustace James Newton (October 26, 1877 – May 14, 1931) was an American Major League Baseball (MLB) pitcher who played for several teams in both the National League and American League. He finished with a 54–72 win–loss record, a 3.22 earned run average (ERA), and 99 complete games. He had his best season in 1902 for Brooklyn, when he went 15–14 with a 2.42 ERA.