abstract:The Proto-Greek language is the assumed last common ancestor of all known varieties of Greek, including Mycenaean, the classical Greek dialects (Attic-Ionic, Aeolic, Doric and Arcado-Cypriot), and ultimately Koine, Byzantine and modern Greek. Some scholars would include the fragmentary ancient Macedonian language, either as descended from an earlier "Proto-Hellenic" language, or by definition including it among the descendants of Proto-Greek as a Hellenic language and/or a Greek dialect.