John R. Macomber | |
|---|---|
 | |
| Born | February 1, 1875 |
| Died | May 11, 1955 (aged 80) Framingham, Massachusetts, U.S. |
| Alma mater | Massachusetts Institute of Technology |
| Occupation | Financier |
| Known for | Involvement in Thoroughbred racing; Raceland estate |
John Russell Macomber (February 1, 1875 – May 11, 1955) was an American financier and sportsman.