| Jack Ostler | |
| Fullname: | John Ostler |
| Birth Date: | 1873 |
| Birth Place: | Newarthill, Scotland |
| Death Place: | Prestonpans, Scotland |
| Position: | Centre half |
| Years1: | 1893–1894 |
| Clubs1: | Motherwell |
| Caps1: | 6 |
| Goals1: | 3 |
| Years2: | 1894–1895 |
| Clubs2: | Bury |
| Caps2: | 15 |
| Goals2: | 6 |
| Years3: | 1895–1896 |
| Clubs3: | Motherwell |
| Caps3: | 19 |
| Goals3: | 2 |
| Years4: | 1896–1900 |
| Caps4: | 67 |
| Goals4: | 3 |
| Years5: | 1900 |
| Caps5: | 3 |
| Goals5: | 0 |
| Totalcaps: | 110 |
| Totalgoals: | 14 |
John Ostler (1873–1956) was a Scottish footballer who played in the Scottish Football League for Motherwell and in the English Football League for Bury, Middlesbrough and Newcastle United.[1] [2] [3] [4]