 He studied at the Drama School of the National Theatre of Greece (Ethniko Theatro) in Athens and made his stage debut in 1938, appearing as the Knight in William Shakespeare's "King Lear".He excelled in Shakespeare's "Hamlet" as the Grave Digger and in Dimitris Psathas’ "Fonazei o Kleftis" as General Solon Karaleon.Dionysis Papagiannopoulos acted in all types of plays and appeared in more than 120 films in supporting and leading roles.