| Roles | Referee |
|---|---|
| Sex | Male |
| Full name | Gerhard Jacob Markus•Karlsen |
| Used name | Gerhard•Karlsen |
| Born | 25 October 1890 in Skedsmo, Viken (NOR) |
| Died | 2 July 1955 (aged 64 years 8 months 8 days) in Oslo, Oslo (NOR) |
| Affiliations | Oslo Skøiteklub |
| NOC | Norway |
| Games | Sport (Discipline) / Event | NOC / Team | Phase | Unit | Role | As | |
|---|---|---|---|---|---|---|---|
| 1936 Winter Olympics | Speed Skating (Skating) | NOR |
Gerhard Karlsen | ||||
| 500 metres, Men (Olympic) | Final Standings | Referee | |||||
| 1,500 metres, Men (Olympic) | Final Standings | Referee | |||||
| 5,000 metres, Men (Olympic) | Final Standings | Referee | |||||
| 10,000 metres, Men (Olympic) | Final Standings | Referee |