| Matyáš Démar | |
| Nationality: | Czech |
| Birth Date: | 1 October 1991 |
| Height: | 2.04 m |
| Weight: | 100 kg |
| Spike: | 340 cm |
| Block: | 328 cm |
| Position: | Setter |
| Currentclub: | Nantes Rezé Métropole Volley |
| Nationalteam: | Czech Republic |
Matyáš Démar (born 1 October 1991) is a Czech volleyball player for Nantes Rezé Métropole Volley and the Czech national team.
He participated at the 2017 Men's European Volleyball Championship.[1]