 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Female | 
| Full name | Johanna Katarina "Jopie"•Selbach (-Koé) | 
| Used name | Jopie•Selbach | 
| Born | 27 July 1918 in Haarlem, Noord-Holland (NED) | 
| Died | 30 April 1998 in Zoetermeer, Zuid-Holland (NED) | 
| Affiliations | ADZ, Amsterdam (NED) | 
| NOC |  Netherlands | 
| Medals | OG | 
| Gold | 1 | 
| Silver | 0 | 
| Bronze | 0 | 
| Total | 1 | 
Jopie Selbach had the following podium finishes at major championships: 1st in the 1936 Olympics 4×100 metres Freestyle Relay; 1st in the 1934 European Championships 4×100 metres Freestyle Relay (with Ans Timmermans, Rie Mastenbroek, and Willy den Ouden).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1936 Summer Olympics | Swimming (Aquatics) |  NED | Jopie Selbach | |||
| 4 × 100 metres Freestyle Relay, Women (Olympic) | Netherlands | 1 | Gold |