| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Hreinn•Halldórsson | |
| Used name | Hreinn•Halldórsson | |
| Born | 3 March 1949 in Hólmavík, Vestfirðir |  ISL |
| Measurements | 192 cm / 125 kg | |
| Affiliations | KR — Reykjavík, Höfuðborgarsvæði | ISL |
| NOC | Iceland | ISL |
Personal Best: SP – 21.09 (1977).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1976 Summer Olympics | Athletics | ISL |
Hreinn Halldórsson | |||
| Shot Put, Men (Olympic) | 15 QR | |||||
| 1980 Summer Olympics | Athletics | ISL |
Hreinn Halldórsson | |||
| Shot Put, Men (Olympic) | 10 |
