|Date of birth||2 July 1993|
|Place of birth||Aryanah, Tunisia|
|Height||1.88 m (6 ft 2 in)|
* Senior club appearances and goals counted for the domestic league only and correct as of 21:30, 14 September 2019 (UTC)|
‡ National team caps and goals correct as of 10:51, 25 July 2019 (UTC)
Mariah was formed in AS Ariana, the team that was active in the Tunisian Ligue Professionnelle 2. In the 2013–14 season, he was transferred to ES Métlaoui when he was 20 years old. After spending two seasons with the team, he was prominently featured and invited to the Tunisian Olympic team. He attracted the attention of the officials of CS Sfaxien, one of the most important teams in the Tunisian Ligue Professionnelle 1 who sought to sign with him, starting from the 2014–15 season. Since his first season with CS Sfaxien, Yassin Meriah has been a key figure in the squad and has managed to play in many of the team's defensive positions.
On 28 July 2018, Meriah joined Olympiacos for an estimated transfer fee of €1,500,000, signing a four-year contract. On 2 September 2018, he scored his first goal for the club in a 5–0 home win against PAS Giannina. 
- As of 25 July 2019
- Scores and results list Tunisia's goal tally first.
|1.||1 September 2017||Stade Olympique de Radès, Radès, Tunisia||DR Congo||1–0||2–1||2018 FIFA World Cup qualification|
|2.||13 October 2018||Stade Olympique de Radès, Radès, Tunisia||Niger||1–0||1–0||2019 Africa Cup of Nations qualification|
|3.||22 March 2019||Stade Olympique de Radès, Radès, Tunisia||Eswatini||4–0||4–0|
- "2018 FIFA World Cup: List of players" (PDF). FIFA. 14 July 2018. p. 31.
- "Aνακοίνωσε τον Μεριά ο Ολυμπιακός" (in Greek). Retrieved 28 July 2018.
- "Ολυμπιακός - ΠΑΣ Γιάννινα 5-0" (in Greek). Retrieved 2 September 2018.
- Crawford, Stephen (4 June 2018). "Revealed: Every World Cup 2018 squad - Final 23-man lists". Goal. Retrieved 16 July 2019.
- Okeleji, Oluwashina (2 June 2018). "Tunisia World Cup squad: Leicester City's Benalouane in 23-man squad". BBC Sport. Retrieved 1 August 2018.
- "Yassine Meriah". National Football Teams. Benjamin Strack-Zimmerman. Retrieved 13 October 2018.
- Yassine Meriah at Soccerway
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