| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Klaas Cornelis Hendrik•Balk | |
| Used name | Klaas•Balk | |
| Born | 27 December 1948 in Badhoevedorp, Noord-Holland |  NED |
| Measurements | 182 cm / 78 kg | |
| NOC | Netherlands | NED |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Cycling Track (Cycling) | NED |
Klaas Balk | |||
| Team Pursuit, Men (Olympic) | Netherlands | 2 h7 r1/4 | ||||
| 1972 Summer Olympics | Cycling Track (Cycling) | NED |
Klaas Balk | |||
| Sprint, Men (Olympic) | 4 | |||||
| Tandem Sprint, Men (Olympic) | Peter van Doorn | =5 |
