| Stefan Janos | |
| Birth Name: | Janosch Stefan |
| Birth Date: | 1981 4, mf=yes |
| Birth Place: | Karlsruhe, West Germany |
| Nationality: | German |
| Other Names: | The Rock |
| Residence: | Karlsruhe, Germany |
| Weight: | 112kg (247lb) |
| Weight Class: | Heavyweight |
| Style: | Combat Sambo |
| Team: | Alliance 1/Mach |
| Years Active: | 2010–present (MMA) |
| Mma Kowin: | 2 |
| Mma Subwin: | 2 |
| Mma Decwin: | 1 |
| Mma Koloss: | 2 |
| Mma Subloss: | 2 |
| Sherdog: | 58504 |
Stefan Janos (born Janosch Stefan) is a German Sambo, mixed martial artist and Judo practitioner who won the Silver Medal at the 2008 World Sambo Championships, in Men's Combat Sambo. Janosch defeated Pedro Brett (Venezuela), Volodimir Begeza (Ukraine), and Arsen Khachatryan (Armenia) without giving up a point before falling to eventual champion Blagoi Ivanov (Bulgaria) in the final. Janosch has also competed in many grappling competitions, and recently began a career in mixed martial arts.[1]
|-| Win|align=center| 5–4|Bjoern Schmiedeberg|Decision (majority)|GMC 5 – German MMA Championship ||align=center| 3|align=center| 5:00|Castrop-Rauxel, Germany ||-| Loss|align=center| 4–4|Dritan Barjamaj|TKO (corner stoppage)|RA 1 – Respect Austria 1 ||align=center| 3|align=center| 3:00|Freistadt, Austria||-| Loss|align=center| 4–3|Dritan Barjamaj|KO (knee and punch)|Respect Fighting Championship 8||align=center| 2|align=center| 1:10|Wuppertal, Germany||-| Win|align=center| 4-2|Murat Gezerci|Submission (keylock)|Respect Fighting Championship 7||align=center| 1|align=center| 2:55|Essen, Germany||-| Loss|align=center| 3-2|Sultan Kasanow|Submission (punches) |Riad Rumble||align=center| 2|align=center| 2:20|Castrop-Rauxel, North Rhine-Westphalia, Germany||-| Win|align=center| 3-1|Igor Swonkin|Submission (strikes) |SFC 4 – Germany vs. Russia||align=center| 1|align=center| 0:42|Giessen, Germany||-| Loss|align=center| 2-1|Karol Celinski|Submission (rear-naked choke) |IFF – The Eternal Struggle||align=center| 3|align=center| 2:16|Dąbrowa Górnicza, Silesian Voivodeship, Poland||-| Win|align=center| 2-0|Thorsten Klein|TKO (knee) |RFC – Respect Fighting Championship 4||align=center| 1|align=center| 0:49|Herne, North Rhine-Westphalia, Germany||-| Win|align=center| 1-0|Nacim Bouaita|KO (punch)|Backstreet Fights 3 – Herb vs. Babene||align=center| 1|align=center| 3:35|Heilbronn, Germany|MMA debut|-