| Marko Klok | |
| Nationality: | Dutch |
| Birth Date: | 1968 3, df=y |
| Birth Place: | Monnickendam, North Holland, Netherlands |
| Nationalyears: | 1991–2008 |
| Position: | Outside hitter |
| Teamnumber: | 7 (1992) 3 (2004) |
| Height: | 194 cm |
Marko Klok (in Dutch; Flemish pronounced as /ˈmɑrkoː ˈklɔk/, born 14 March 1968 in Monnickendam, North Holland) is a volleyball player from the Netherlands who represented his native country in two Summer Olympics, starting in 1992 in Barcelona, Spain. There he won the silver medal as a part of the Dutch Men's National Team, and later took ninth at the 2004 Summer Olympics in Athens, Greece. He played a total of 378 international matches for the Dutch volleyball team.
Klok and partner Michiel van der Kuip won the 1995 European Beach Volleyball Championships.
In November 2021 he become national coach of the women's teams of Beach Volleyball Team Netherlands (BTN).[1]