| Klaus Oldendorff | |
| Nationality: | German |
| Sport: | Sailing |
| Birth Date: | 14 April 1933 |
| Birth Place: | Lübeck, Germany |
| Death Place: | Verbier, Switzerland |
Klaus Oldendorff (14 April 1933 - 17 March 2003) was a German sailor. He competed in the Dragon event at the 1968 Summer Olympics.[1]