| Harry Eccles | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | July 9, 1893 |
| Birth Place: | Kennedy, New York |
| Death Place: | Jamestown, New York |
| Debutleague: | MLB |
| Debutdate: | September 13 |
| Debutyear: | 1915 |
| Debutteam: | Philadelphia Athletics |
| Finalleague: | MLB |
| Finaldate: | September 27 |
| Finalyear: | 1915 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–1 |
| Stat2label: | Earned run average |
| Stat2value: | 4.71 |
| Stat3label: | Strikeouts |
| Stat3value: | 13 |
| Teams: |
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Harry Josiah Eccles (July 9, 1893 – June 2, 1955), nicknamed "Bugs", was an American professional baseball pitcher. He appeared in five games for the Philadelphia Athletics of Major League Baseball during the season, with his only major league decision coming in what would also prove his only start, in his final appearance, against the Chicago White Sox on September 27, allowing all six runs over three innings in the 6–5 defeat. Eccles would go on to appear in the International League in 1916, compiling a mark of 3-3, but never appear in professional baseball thereafter.