| Jan Dieteren | |
| Fullname: | Jan Dieteren |
| Birth Date: | 12 April 1993 |
| Birth Place: | Bensheim, Germany |
| Currentteam: | RSC Kempten |
| Discipline: | Road |
| Role: | Rider |
| Amateuryears1: | 2005–2011 |
| Amateurteam1: | SSG Bensheim |
| Amateuryears2: | 2010–2011 |
| Amateuryears3: | 2011 |
| Amateurteam3: | Berner-Bikes.com + Compression-x.de |
| Amateuryears4: | 2019 |
| Amateurteam4: | SSG Bensheim |
| Amateuryears5: | 2020– |
| Amateurteam5: | RSC Kempten |
| Proyears1: | 2012–2014 |
| Proyears2: | 2015–2017 |
| Proyears3: | 2018 |
Jan Dieteren (born 12 April 1993) is a German cyclist, who currently rides for German amateur team RSV Kempten.[1]
In early 2016, he was diagnosed with testicular cancer. Because of this, he did not compete during the 2016 season, but resumed competition in April 2017.[2] Dieteren failed to finish any races in 2017 either.