| Nikolas Ketner | |
| Position: | Defence |
| Shoots: | Left |
| Height Ft: | 6 |
| Height In: | 2 |
| Weight Lb: | 187 |
| League: | Slovak Extraliga |
| Birth Date: | 1991 2, mf=yes |
| Draft: | Undrafted |
| Career Start: | 2010 |
Nikolas Ketner[1] (born February 13, 1991) is a Slovak professional ice hockey defenceman who played with HC Slovan Bratislava in the Slovak Extraliga during the 2010–11 season.