The Art of Grammar (Greek: Τέχνη Γραμματική or (romanized) Technē Grammatikē) is a treatise on Greek grammar, attributed to Dionysius Thrax, who wrote in the 2nd century BC. It is the first work on grammar in Greek, and also the first concerning a Western language; it sought mainly to help speakers of Koine Greek understand the language of Homer and other great poets of the past.
It was translated into Armenian and Syriac in the early centuries AD.