| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | H. W.•Hofland |
| Used name | H. W.•Hofland |
| NOC |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Water Polo (Aquatics) | H. W. Hofland | |||||
| Water Polo, Men (Olympic) | Match #24 | East Germany — United Arab Republic | Referee | ||||
| Water Polo, Men (Olympic) | Match #27 | Yugoslavia — Japan | Referee |