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,[1] 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:[2] He finished in second place in the Peace Race in 1975.

This article about a cycling Olympic medalist of Germany is a stub.