Rainer Strohbach (born 17 April 1958) is a retired German swimmer.
He competed at the 1976 and 1980 Summer Olympics in six freestyle events in total.
He had his best results in the 4 × 200 m freestyle relay, finishing in fifth and second place, respectively.
He won a bronze medal in this event at the 1977 European Aquatics Championships.He was married to Kirsten Wenzel, a German rower who also competed at the 1980 Olympics.