| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Hjalmar Johan•Christoffersen |
| Used name | Hjalmar•Christoffersen |
| Nick/petnames | Hjalle |
| Born | 1 December 1889 in København (Copenhagen), Hovedstaden (DEN) |
| Died | 28 December 1966 (aged 77 years 27 days) in København (Copenhagen), Hovedstaden (DEN) |
| Affiliations | BK Frem, København (DEN) |
| NOC |  Denmark |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
Hjalmar Christoffersen played as a forward for BK Frem from 1906 and in between just one season for Østerbros Boldklub. At the 1912 Olympic Games in Stockholm, Denmark had a bye in round one and defeated Norway and the Netherlands convincingly to reach the final. Here the lost 4-2 to Great Britain (England) winning Olympic silver. Christoffersen only played in the first match against Norway. This was also his only appearance for the Danish national team.
Christoffersen worked as a machine operator. He was married to Madelene Louise Lebarbier.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Football (Football) | DEN |
Hjalmar Christoffersen | |||
| Football, Men (Olympic) | Denmark | 2 | Silver |
