| Intro | Swimmer |
| Was |
Athlete Swimmer |
| From | Netherlands |
| Type | Sports |
| Gender | female |
| Birth | 27 July 1918, Haarlem, North Holland, Netherlands, Kingdom of the Netherlands |
| Death |
30 April 1998, Zoetermeer, South Holland, Netherlands, Kingdom of the Netherlands (aged 79 years) |
Johanna “Jopie” Katarina Selbach (27 July 1918 – 30 April 1998) was a freestyle swimmer from the Netherlands. She won gold medals at the 1934 European Aquatics Championships (with Willy den Ouden, Rie Mastenbroek and Ans Timmermans) and 1936 Summer Olympics (with den Ouden, Mastenbroek and Tini Wagner) in the women’s 4 × 100 m freestyle relay.