| Marios Tsaousis | |
| Birth Date: | 11 May 2000 |
| Birth Place: | Thessaloniki, Greece |
| Height: | 1.720NaN0 |
| Currentclub: | PAOK B |
| Clubnumber: | 24 |
| Position: | Left-back |
| Youthyears1: | 2008–2010 |
| Youthclubs1: | Iraklis |
| Youthyears2: | 2010–2018 |
| Youthclubs2: | PAOK |
| Years1: | 2018– |
| Clubs1: | PAOK |
| Caps1: | 18 |
| Goals1: | 0 |
| Years2: | 2019–2020 |
| Clubs2: | → Volos (loan) |
| Caps2: | 13 |
| Goals2: | 1 |
| Years3: | 2020–2021 |
| Clubs3: | → Spartak Trnava (loan) |
| Caps3: | 12 |
| Goals3: | 0 |
| Years4: | 2021– |
| Clubs4: | PAOK B |
| Caps4: | 29 |
| Goals4: | 1 |
| Years5: | 2023–2024 |
| Clubs5: | → PAS Giannina (loan) |
| Caps5: | 22 |
| Goals5: | 1 |
| Nationalyears1: | 2016–2017 |
| Nationalteam1: | Greece U16 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2016–2018 |
| Nationalcaps2: | 5 |
| Nationalgoals2: | 0 |
| Nationalyears3: | 2018 |
| Nationalteam3: | Greece U18 |
| Nationalcaps3: | 3 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 2018–2019 |
| Nationalcaps4: | 8 |
| Nationalgoals4: | 2 |
| Nationalyears5: | 2019–2021 |
| Nationalcaps5: | 4 |
| Nationalgoals5: | 0 |
| Pcupdate: | 22 September 2024 |
| Ntupdate: | 3 September 2021 |
Marios Tsaousis (el|Μάριος Τσαούσης; born 11 May 2000) is a Greek professional footballer who plays as a left-back for Super League 2 club PAOK B.
Tsaousis joined from Iraklis in 2010 and immediately became the leader of the Under-15 (2014-15) team, an Under-17 title-winner, and he was also crowned a champion with the Under-19 squad. He is a fast and creative left-back who can operate just as well in the position of left midfielder. He wore a first team shirt in the friendly with Doxa Drama in 2016, and then was loaned to Volos and Spartak Trnava[1] . He is a Greek youth international with the Under-21 team. Marios Tsaousis will remain a player of PAOK for the next three years, after as announced by Dikefalos, the 21-year-old left back renewed his contract with the team, which will be valid until December 2025. The young defender is playing for PAOK B.[2]