| Ray Callahan | |
| Position: | Pitcher |
| Birth Date: | 29 August 1891 |
| Birth Place: | Ashland, Wisconsin |
| Death Date: | (aged 81) |
| Death Place: | Olympia, Washington |
| Bats: | Left |
| Throws: | Left |
| Debutleague: | MLB |
| Debutdate: | September 12 |
| Debutyear: | 1915 |
| Debutteam: | Cincinnati Reds |
| Finalleague: | MLB |
| Finaldate: | September 27 |
| Finalyear: | 1915 |
| Finalteam: | Cincinnati Reds |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–0 |
| Stat2label: | Earned run average |
| Stat2value: | 8.53 |
| Stat3label: | Strikeouts |
| Stat3value: | 4 |
| Teams: |
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Ray Callahan (born Raymond James Callahan[1]) was a Major League Baseball pitcher. He played with the Cincinnati Reds in 1915.[2]