| Sport: | Water polo |
| Birth Date: | 28 February 1971 |
| Birth Place: | Hilversum, Netherlands |
Jacobus "Koos" Issard (born February 28, 1971)[1] is a former water polo player from the Netherlands, who finished in ninth position with the Dutch team at the 1992 Summer Olympics in Barcelona. Four years later, Issard was a member of the squad that was tenth in the final rankings in Atlanta, Georgia.