| Clemens Unterweger | |
| Birth Date: | 1992 4, df=yes |
| Birth Place: | Lienz, Austria |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lbs: | 187 |
| Position: | Defence |
| Shoots: | Left |
| League: | ICEHL |
| Team: | EC KAC |
| Former Teams: | Graz 99ers |
| Ntl Team: | AUT |
| Career Start: | 2012 |
Clemens Unterweger (born 1 April 1992) is an Austrian professional ice hockey defenceman playing for EC KAC of the ICE Hockey League (ICEHL).[1]