| Klaas Buchly | |
| Birth Date: | 26 January 1910 |
| Birth Place: | The Hague, the Netherlands |
| Death Place: | The Hague, the Netherlands |
| Show-Medals: | yes |
Nicolaas "Klaas" Buchly (26 January 1910 - 19 May 1965) was a Dutch track cyclist. He competed at the 1948 Summer Olympics in the 2 km tandem sprint, together with Tinus van Gelder, and finished in fifth place.