| Birth Date: | 2 November 1924 |
| Birth Place: | Oostzaan, the Netherlands |
| Death Date: | 6 February 2002 (aged 77) |
| Sport: | Sprint |
| Club: | AV Zaanland, Zaandam, Sagitta, Amsterdam |
| Show-Medals: | yes |
Grietje "Gré" de Jongh (2 November 1924 – 6 February 2002) was a Dutch sprinter. She competed at the 1948 and 1952 Summer Olympics in four events in total: 100 m, 200 m (twice) and 4 × 100 m relay and finished in sixth place in the relay. She won a silver medal in this event at the 1950 European Athletics Championships.