Orval Overall (February 2, 1881 – July 14, 1947) was an American pitcher in Major League Baseball.

With the Pacific Coast League's Tacoma Tigers, he pitched 510.2 innings, going 32–25 with a 2.78 earned run average.

In 1905, his rookie season, he was the ace of the Reds pitching staff and won 18 games.

In 1908, Overall "slumped" to just 15 wins but also won twice in the 1908 World Series as Chicago repeated as champions.

In total, he played seven years in the major leagues, compiling a record of 108–71 with a 2.23 lifetime ERA.