 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Moacyr•Costa Dunham | 
| Used name | Moacyr•Dunham | 
| Born | 15 October 1910 in Rio de Janeiro, Rio de Janeiro (BRA) | 
| Died | (before 1980) | 
| Affiliations | Flamengo, Rio de Janeiro (BRA) | 
| NOC |  Brazil | 
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1936 Summer Olympics | Fencing |  BRA | Moacyr Dunham | |||
| Foil, Individual, Men (Olympic) | 6 p7 r1/5 | |||||
| Foil, Team, Men (Olympic) | Brazil | 3 p2 r1/4 | ||||
| Épée, Individual, Men (Olympic) | 8 p5 r1/4 | |||||
| Épée, Team, Men (Olympic) | Brazil | 3 p7 r1/4 | ||||
| Sabre, Individual, Men (Olympic) | 8 p3 r1/4 | |||||
| Sabre, Team, Men (Olympic) | Brazil |