| Klaus Bittner | |
| Birth Place: | Görlitz, Germany |
| Height: | 1.91m (06.27feet) |
| Weight: | 85kg (187lb) |
| Sport: | Rowing |
| Club: | Ratzeburger RC |
| Show-Medals: | yes |
Klaus Bittner (born 23 October 1938) is a retired German rower who won two Olympic medals for the United Team of Germany: a gold and a silver in the eights in 1960 and 1964, respectively. He also won four European titles in fours and eights between 1959 and 1964.