| Hans-Joachim Hartnick | |
| Birth Date: | 12 January 1955 |
| Birth Place: | Wormlage, Bezirk Cottbus, East Germany |
| Height: | 1.8m (05.9feet) |
| Weight: | 76kg (168lb) |
| Show-Medals: | yes |
Hans-Joachim Hartnick (born 12 January 1955) is a retired East German cyclist. He had his best achievements in the 100 km team time trial. In this discipline he won a silver medal at the 1980 Summer Olympics, a bronze medal at the world championships in 1974 and a gold medal at the world championships in 1979; his team finished in 10th place at the 1976 Summer Olympics.
Individually, he won the following races:
He finished in second place in the Peace Race in 1975.