| Denis Duga | |
| Birth Date: | 5 September 1994 |
| Birth Place: | Myjava, Slovakia |
| Currentclub: | ViOn Zlaté Moravce |
| Clubnumber: | 14 |
| Position: | Midfielder |
| Youthyears1: | –2008 |
| Youthclubs1: | Spartak Myjava |
| Youthyears2: | 2008–2013 |
| Youthclubs2: | Slavia Prague |
| Years1: | 2013–2014 |
| Clubs1: | Slavia Prague jun. |
| Years2: | 2014 |
| Clubs2: | → Spartak Myjava (loan) |
| Caps2: | 13 |
| Goals2: | 1 |
| Years3: | 2014–2016 |
| Clubs3: | Spartak Myjava |
| Caps3: | 61 |
| Goals3: | 9 |
| Years4: | 2017 |
| Caps4: | 3 |
| Goals4: | 0 |
| Years5: | 2017 |
| Clubs5: | Senica |
| Caps5: | 14 |
| Goals5: | 1 |
| Years6: | 2018– |
| Clubs6: | ViOn Zlaté Moravce |
| Caps6: | 137 |
| Goals6: | 6 |
| Nationalyears1: | 2015–2016 |
| Nationalcaps1: | 0 |
| Nationalgoals1: | 0 |
| Club-Update: | 28 June 2024 |
| Nationalteam-Update: | 15 June 2015 |
Denis Duga (born 5 September 1994) is a Slovak professional footballer who currently plays for Slovak club ViOn Zlaté Moravce.