| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | William "Billy"•McCreedy |
| Used name | Billy•McCreedy |
| Other names | Bill |
| NOC |  Ireland |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Water Polo (Aquatics) | IRL |
Billy McCreedy | ||||
| Water Polo, Men (Olympic) | Match #3 | Hungary — Belgium | Goal Judge | ||||
| Water Polo, Men (Olympic) | Match #4 | Italy — Netherlands | Goal Judge | ||||
| Water Polo, Men (Olympic) | Match #2 | Argentina — Egypt | Goal Judge | ||||
| Water Polo, Men (Olympic) | Match #2 | Yugoslavia — Australia | Goal Judge |
