| Mandy de Jongh | |
| Birth Name: | Margaretha de Jongh |
| Nationality: | Dutch |
| Martial Art: | Taekwondo |
| Show-Medals: | yes |
Margaretha "Mandy" de Jongh (born 27 December 1961)[1] is a taekwondo practitioner from the Netherlands. In 1987 she won the World Championships in the middleweight (then −70 kg) category. Next year, she received an unofficial silver medal in the same weight category at the 1988 Summer Olympics (taekwondo was then an exhibition event).[2] She also won two European titles in 1986 and 1988.
Next to taekwondo she was a switchboard operator and receptionist at the Ministry of Education.[3]