| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Guillermo Barney•Williams |
| Used name | Barney•Williams |
| Born | 13 March 1977 in San Martín de los Andes, Neuquén (ARG) |
| Measurements | 193 cm / 91 kg |
| Affiliations | Mad Dog Rowing |
| NOC |  Canada |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2004 Summer Olympics | Rowing | CAN |
Barney Williams | |||
| Coxless Fours, Men (Olympic) | Canada | 2 | Silver |
| Games | Date | Sport | Event | Phase | Mark | Pos |
|---|---|---|---|---|---|---|
| 2004 Summer Olympics | 18 August 2004 | Rowing | Coxless Fours, Men | Heat #1 | 5:50.68 | 1 |
