Allusions to any type of writing, including that of writing letters, found in Greek tragedies represent an anachronism; all but Aeschylus' Persians are based on mythological stories of the Mycenaean period which is characterized by oral communication. Nevertheless, terms which allude to written documents, inscriptions or letters are sporadically found in the surviving dramas. In this thesis, all terms which allude to writing in Aeschylus', Sophocles' and Euripides' extant dramas and fragments have been identified and contextually analyzed. Textual search has been carried out with the help of the Diogenes software and the Thesaurus Linguae Graecae online textual database. Naturally, the first point of reference were all of the derivatives of the root γραφ- (verbs, nouns and adjectives), after which came the terms by which letters are usually designated in Greek texts (eg. ἐπιστολή and δέλτος), as well as verbs which signify the sending of letters (derivatives of στέλλ-). All terms connected with writing have been extracted, the verses in which they appear have been carefully analyzed, after which the terms have been enumerated and catalogued according to their approximate meaning (letter, writing, painting, tablet etc.). Finally, the frequency of all of the terms in the dramas of the three tragedians have been determined and an analysis of whether the authors use the more imporant terms equally (eg. ἐπιστολή, δέλτος, γράμματα etc.) has been carried out.