| Thomas Fothen | |
| Fullname: | Thomas Fothen |
| Birth Date: | 6 April 1983 |
| Birth Place: | Neuss, Germany |
| Currentteam: | Retired |
| Discipline: | Road |
| Role: | Rider |
| Ridertype: | Sprinter |
| Amateuryears1: | 2004 |
| Amateurteam1: | Teag Köstritzer |
| Proyears1: | 2005 |
| Proteam1: | Team Sparkasse |
| Proyears2: | 2006–2008 |
| Proyears3: | 2009–2010 |
| Proyears4: | 2011 |
Thomas Fothen (born 6 April 1983 in Neuss) is a German former professional racing cyclist. He is the younger brother of Markus Fothen. He rode in three editions of the Giro d'Italia.