Full name: Niels Marius Nielsen
Gender: Male
Born: October 5, 1883 in Oslo, Oslo, Norway
Died: February 9, 1961 in Bærum, Akershus, Norway
Affiliations: KNS, Oslo (NOR)
Country:
Norway
Sport: Sailing
Medals: 1 Silver (1 Total)
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 1920 Summer | 36 | Antwerpen | Sailing | Mixed 7 metres | Fornebo | NOR | 2 | Silver |
| Games | Age | City | Sport | Team | NOC | Phase | Unit | Date | PTS | T |
|---|---|---|---|---|---|---|---|---|---|---|
| 1920 Summer | 36 | Antwerpen | Sailing | Fornebo | NOR | Final Standings | 1920-07-07 | 5 | ||
| 1920 Summer | 36 | Antwerpen | Sailing | Fornebo | NOR | Race One | 1920-07-07 | 1-17:36 | ||
| 1920 Summer | 36 | Antwerpen | Sailing | Fornebo | NOR | Race Two | 1920-07-08 | 1-22:25 | ||
| 1920 Summer | 36 | Antwerpen | Sailing | Fornebo | NOR | Race Three | 1920-07-09 | 1-06:07 |