| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Willem Tell "William"•Pietersz |
| Used name | William•Pietersz |
| Born | 18 February 1925 in Barranquilla, Atlántico (COL) |
| Died | 24 October 1992 in Barranquilla, Atlántico (COL) |
| NOC | Colombia |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1956 Summer Olympics | Shooting | COL |
William Pietersz | |||
| Trap, Men (Olympic) | 22 |