| Hjalmar Christoffersen | |
| Full Name: | Hjalmar Johan Christoffersen |
| Birth Date: | 1889 12, df=yes |
| Birth Place: | Copenhagen, Denmark |
| Death Place: | Copenhagen, Denmark |
| Position: | Forward |
| Clubs1: | BK Frem |
| Nationalyears1: | 1912 |
| Nationalteam1: | Denmark MNT |
| Nationalcaps1: | 1 |
Hjalmar Johan Christoffersen (1 December 1889 in Copenhagen – 28 December 1966 in Copenhagen) was a Danish amateur football (soccer) player, who played in the forward position. He played one game for the Denmark national football team, as they won a silver medal at the 1912 Summer Olympics.[1] During his career, he most notably played for Boldklubben Frem.