| Jack Diamond | |
| Fullname: | John James Diamond[1] |
| Birth Date: | 30 October 1910 |
| Birth Place: | Middlesbrough, England |
| Height: | 5 ft 9+1/2 in[2] |
| Position: | Forward |
| Years1: | 1931–1932 |
| Clubs1: | Hull City |
| Years2: | 1932–1933 |
| Clubs2: | Shelbourne |
| Years3: | 1933–1934 |
| Clubs3: | Southport |
| Caps3: | 48 |
| Goals3: | 28 |
| Years4: | 1934–1935 |
| Clubs4: | Barnsley |
| Years5: | 1935–1936 |
| Clubs5: | Cardiff City |
| Caps5: | 18 |
| Goals5: | 9 |
| Years6: | 1936 |
| Clubs6: | Bury |
| Years7: | 1936–1938 |
| Clubs7: | Oldham Athletic |
| Years8: | 1938–1939 |
| Clubs8: | Hartlepools United |
John James Diamond (30 October 1910 — 08 July 1961) was an English professional footballer who played as a forward.[3]