| Height: | 214 cm |
| Fullname: | Johannes Martinus van der Horst |
| Nickname: | Martin |
| Birth Date: | 2 April 1965 |
| Birth Place: | Heemskerk, North Holland, Netherlands |
| Nationalyears: | 1989–2000 |
| Position: | Middle blocker |
| Teamnumber: | 14 |
Johan Martin van der Horst (born 2 April 1965) is a retired volleyball player from the Netherlands who represented his native country at two Summer Olympics (1992 and 2000). He was a member of the Dutch national team that won the silver medal in Barcelona (1992).