| Mário Sauer | |
| Full Name: | Mário Sauer |
| Height: | 1.80m |
| Birth Date: | 15 May 2004 |
| Birth Place: | Slovakia |
| Currentclub: | Žilina |
| Clubnumber: | 37 |
| Position: | Midfielder |
| Youthyears1: | –2013 |
| Youthclubs1: | Rača |
| Youthyears2: | 2014–2018 |
| Youthclubs2: | Slovan Bratislava |
| Youthyears3: | 2018–2020 |
| Youthclubs3: | Žilina |
| Years1: | 2021–2023 |
| Caps1: | 23 |
| Goals1: | 7 |
| Years2: | 2021– |
| Caps2: | 55 |
| Goals2: | 7 |
| Nationalyears1: | 2021– |
| Nationalcaps1: | 12 |
| Nationalgoals1: | 0 |
| Club-Update: | 26 June 2024 |
| Nationalteam-Update: | 3 May 2023 |
Mário Sauer (born 15 May 2004) is a Slovak professional footballer who currently plays for Niké Liga club MŠK Žilina as a midfielder.
Sauer made his Fortuna Liga debut for Žilina against Spartak Trnava on 16 May 2021. He came on in the second half replacing Vahan Bichakhchyan.[1]
Sauer played for the Slovakia U-19 side alongside his younger brother, Leo Sauer. Both were selected for the Slovakia U-20 side to compete at the 2023 FIFA U-20 World Cup.[2]