John Williamson
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| Player ID | 3757 |
| First Name | John |
| Last Name | Williamson |
| Sex | M |
| User ID | 0 |
| Club (used in grading individual event) | Perth |
| DOB | **** |
| Local Rating | |
| Local Rapid Rating | |
| FIDE Code | 2406527 |
| FIDE Federation | |
| PNUM | 6488 |
| Chess Scotland Std | 1424 |
| Chess Scotland Alg | 1406 |
| CS Live Std | 1414 |
| CS Live Allegro | 1374 |