Marjan op den Velde (born 9 January 1971) is a Dutch former water polo player.

She was a member of the Netherlands women's national water polo team.

She competed with the team at the 2000 Summer Olympics.

[1] She was also part of the national team at the 1991 World Aquatics Championship,[2] 1998 World Aquatics Championships, 1999 Women's European Water Polo Championship and 1999 FINA Women's Water Polo World Cup.

This biographical article relating to a Dutch water polo figure is a stub.