| Art Decatur | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 14 January 1894 |
| Birth Place: | Cleveland, Ohio |
| Death Place: | Talladega, Alabama |
| Debutleague: | MLB |
| Debutdate: | April 15 |
| Debutyear: | 1922 |
| Debutteam: | Brooklyn Robins |
| Finalleague: | MLB |
| Finaldate: | October 1 |
| Finalyear: | 1927 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 23-34 |
| Stat2label: | Earned run average |
| Stat2value: | 4.51 |
| Stat3label: | Strikeouts |
| Stat3value: | 152 |
| Teams: |
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Arthur Rue Decatur (January 14, 1894 – April 25, 1966) was a pitcher in Major League Baseball. He pitched from 1922 to 1927 for the Brooklyn Robins and the Philadelphia Phillies.