Peter Mamouzelos (born 9 January 2001) is a Greece international rugby league footballer who plays as a hooker for the South Sydney Rabbitohs in the NRL.

[2][3] Mamouzelos made his debut in round 14 of the 2021 NRL season for South Sydney off the bench against the Newcastle Knights.

Mamouzelos represented Greece at the 2021 Rugby League World Cup and played in all three group games.

[5] Mamouzelos was limited to only two games for Souths in the 2023 NRL season as the club finished 9th on the table and missed the finals.

[7] In round 6 of the 2024 NRL season, Mamouzelos was named in the starting side for South Sydney after Damien Cook was demoted to 18th man.