| Roles | Non-starter | |
|---|---|---|
| Sex | Male | |
| Full name | Johannes Hendricus "Joop"•Helms | |
| Used name | Joop•Helms | |
| Born | 3 May 1904 in Amsterdam, Noord-Holland |  NED |
| Died | 12 March 1989 (aged 84 years 10 months 9 days) in Amsterdam, Noord-Holland | NED |
| Affiliations | Het Spaarne — Haarlem, Noord-Holland | NED |
| NOC | Netherlands | NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1928 Summer Olympics | Rowing | NED |
Joop Helms | |||
| Coxed Fours, Men (Olympic) | Netherlands |
