 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Ib Benjamin•Nielsen | 
| Used name | Ib•Nielsen | 
| Born | 13 July 1919 in Højby, Odsherred, Sjælland (DEN) | 
| Died | 21 November 1994 in København (Copenhagen), Hovedstaden (DEN) | 
| Affiliations | Trekanten, København (DEN) | 
| NOC |  Denmark | 
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Fencing |  DEN | Ib Nielsen | |||
| Épée, Individual, Men (Olympic) | 5 p5 r2/4 | |||||
| Épée, Team, Men (Olympic) | Denmark | 4 | ||||
| 1952 Summer Olympics | Fencing |  DEN | Ib Nielsen | |||
| Épée, Team, Men (Olympic) | Denmark | =5 |