| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Jón Dagbjartur•Jónsson |
| Used name | Jón•Jónsson |
| Born | 11 April 1908 in Arnarfjörður, Vestfirðir (ISL) |
| Died | 2 August 1973 (aged 65 years 3 months 21 days) in Kópavogur, Höfuðborgarsvæði (ISL) |
| NOC |  Iceland |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1936 Summer Olympics | Water Polo (Aquatics) | ISL |
Jón Jónsson | |||
| Water Polo, Men (Olympic) | Iceland | =13 |
Date of birth previously listed as 28 May 1910.
