|Date of birth||3 August 2000|
|Place of birth||Venice, Italy|
|Height||1.78 m (5 ft 10 in)|
|2019||→ Venezia (loan)||7||(0)|
|2021–||→ Lucchese (loan)||3||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 3 February 2021|
‡ National team caps and goals correct as of 23:17, 12 May 2019 (UTC)
He was first called up to represent his country on 16 January 2019 with Italy national under-19 football team in a friendly against Spain. He scored a goal just one minute after coming on as a substitute in a 3–0 victory.
- "A tu per tu con... Mattia Zennaro" (in Italian). Venezia. 7 November 2018.
- "Game Report by Soccerway". Soccerway.
- "NEWS MERCATO: SI' RADOVANOVIC E ZENNARO" (in Italian). Genoa. 31 January 2019.[permanent dead link]
- "Dal Genoa arriva il centrocampista Mattia Zennaro" (in Italian). Lucchese. 14 January 2021.
- "L'Italia supera a pieni voti l'esame di spagnolo: 3-0 con i gol di Esposito, Zennaro e Petrelli" (in Italian). Italian Football Federation. 16 January 2019.