| Jim Buchanan | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Right |
| Birth Date: | 1 July 1876 |
| Birth Place: | Chatham Hill, Smyth County, Virginia |
| Death Place: | Norfolk, Nebraska |
| Debutleague: | MLB |
| Debutdate: | April 16 |
| Debutyear: | 1905 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | October 7 |
| Finalyear: | 1905 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 5–9 |
| Stat2label: | Earned run average |
| Stat2value: | 3.50 |
| Stat3label: | Strikeouts |
| Stat3value: | 54 |
| Teams: | |
James Forrest Buchanan (July 1, 1876 – June 15, 1949) was a professional baseball player. He was a right-handed pitcher over parts of one season (1905) with the St. Louis Browns. For his career, he compiled a 5–9 record in 22 appearances, with a 3.50 earned run average and 54 strikeouts. Buchanan attended Austin College and Midland Lutheran College.