The Greece men's national under-20 basketball team (Greek: Εθνική ομάδα καλαθοσφαίρισης Νέων Ανδρών Ελλάδας, (Greek young men's national basketball team) is the representative for Greece in international Under-20 age basketball competitions, and it is organized and run by the Hellenic Basketball Federation (E.O.K.). The Greece men's Under-20 national basketball team represents Greece at the FIBA Europe Under-20 Championship. It was previously known as the Greek Under-22 national basketball team.

O Grécia Sub20 é a seleção de basquetebol de menores de 20 anos da Grécia. A equipe é gerida pela Federação Grega de Basquetebol. A Seleção Grega Sub20 competiu no Campeonato Mundial Sub-21 da FIBA e no Campeonato Europeu Sub-20 da FIBA. A Grécia venceu o Campeonato Europeu Sub-20 da FIBA em 2009.