Born in the
French overseas department of
Mayotte, Mattoir is of Comorian descent. He debuted for the
Comoros national team in a 1–1
Africa Cup of Nations qualification draw with
Kenya on 11 November 2020. He scored his first goal for the national team in a 2–1 win against Kenya in
qualifying for the 2021 Africa Cup of Nations. On 23 December 2021, coach
Amir Abdou selected him in the final list of 28 players for the
2021 Africa Cup of Nations in Cameroon. Originally, due to be played in 2021, the tournament was postponed to January 2022 due to the
COVID-19 pandemic in Africa. Comoros advanced to the round of 16 after defeating
Ghana 3–2 in their final group match, eliminating their opponents from the competition. In the round of 16, Comoros lost 2–1 to Cameroon. In 2022, he scored his second goal for the national team, the opening goal in a 2–1 friendly win against
Ethiopia.
International goals :
Scores and results list Comoros goal tally first, score column indicates score after each Mattoir goal. ==References==