| Žiga Mlakar | |
| Birth Date: | 16 May 1990 |
| Birth Place: | Celje, SFR Yugoslavia |
| Nationality: | Slovenian |
| Height: | 1.92 m |
| Position: | Right back |
| Currentclub: | RK Celje |
| Clubnumber: | 55 |
| Years1: | 2007–2014 |
| Clubs1: | RK Celje |
| Years2: | 2014–2015 |
| Clubs2: | RK Maribor Branik |
| Years3: | 2015–2018 |
| Clubs3: | RK Celje |
| Years4: | 2018–2020 |
| Clubs4: | Wisła Płock |
| Years5: | 2020 |
| Clubs5: | RK Zagreb |
| Years6: | 2020– |
| Clubs6: | RK Celje |
| Nationalyears1: | 2014– |
| Nationalteam1: | Slovenia |
| Nationalcaps1: | 26 |
| Nationalgoals1: | 49 |
Žiga Mlakar (born 16 May 1990) is a Slovenian handball player who plays for RK Celje and the Slovenian national team.[1]
He represented Slovenia at the 2018 European Men's Handball Championship.[2]