| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Cornelis "Cees"•Koch |
| Used name | Cees•Koch |
| Born | 30 December 1925 in Zaandam, Noord-Holland (NED) |
| Affiliations | De Geuzen, Zaandam (NED) |
| NOC | Netherlands |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Canoe Marathon (Canoeing) | NED |
Cees Koch | |||
| Kayak Doubles, 10,000 metres, Men (Olympic) | Harry Stroo | 6 | ||||
| 1952 Summer Olympics | Canoe Sprint (Canoeing) | NED |
Cees Koch | |||
| Kayak Doubles, 1,000 metres, Men (Olympic) | Jan Klingers | 8 | ||||
| Canoe Marathon (Canoeing) | NED |
Cees Koch | ||||
| Kayak Doubles, 10,000 metres, Men (Olympic) | Jan Klingers | 9 |