| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | John Patrick•Llewellyn | |
| Used name | John•Llewellyn | |
| Born | 7 August 1957 in Winnipeg, Manitoba |  CAN |
| Measurements | 178 cm / 70 kg | |
| Affiliations | Reading FC — Sonning, England |  GBR |
| NOC | Great Britain | GBR |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1980 Summer Olympics | Fencing | GBR |
John Llewellyn | |||
| Foil, Team, Men (Olympic) | Great Britain | 8 | ||||
| Épée, Individual, Men (Olympic) | 24 | |||||
| Épée, Team, Men (Olympic) | Great Britain | 7 | ||||
| 1984 Summer Olympics | Fencing | GBR |
John Llewellyn | |||
| Épée, Individual, Men (Olympic) | 22 | |||||
| Épée, Team, Men (Olympic) | Great Britain | 8 | ||||
| 1988 Summer Olympics | Fencing | GBR |
John Llewellyn | |||
| Épée, Individual, Men (Olympic) | 40 |
