| Sport: | Water polo |
| Birth Date: | 3 April 1954 |
| Birth Place: | Hilversum, Netherlands |
Nicolaas Albertus Adrianus "Nico" Landeweerd (born 3 April 1954) is a former water polo player from the Netherlands, who participated in three Summer Olympics. At his debut, at the 1976 Summer Olympics in Montreal, he won the bronze medal with the Dutch team. In 1980 and 1984 Landeweerd finished in sixth position with the Holland squad.