John-Jason "JJ" Peterka (born 14 January 2002) is a German professional ice hockey center currently playing for the Buffalo Sabres of the National Hockey League (NHL). He was drafted 34th overall by the Sabres in the 2020 NHL Entry Draft.
Peterka made his professional debut with EHC Red Bull München of the Deutsche Eishockey Liga (DEL).
On 12 June 2021, Peterka was signed by the Buffalo Sabres to a three-year, entry-level contract. During the 2021-2022 season JJ Peterka played for the Rochester Americans which is the AHL team for the Buffalo Sabres.