The Dionysia (/daɪəˈnaɪsiə/) was a large festival in ancient Athens in honor of the god Dionysus, the central events of which were the theatrical performances of dramatic tragedies and, from 487 BC, comedies. It was the second-most important festival after the Panathenaia. The Dionysia actually consisted of two related festivals, the Rural Dionysia and the City Dionysia, which took place in different parts of the year. They were also an essential part of the Dionysian Mysteries.
The Dionysia was originally a rural festival in Eleutherae, Attica (Dionysia ta kat' agrous – Διονύσια τὰ κατ' ἀγρούς), probably celebrating the cultivation of vines. It was probably a very ancient festival, perhaps not originally associated with Dionysus. This "rural Dionysia" was held during the winter, in the month of Poseideon (the month straddling the winter solstice, i.e., Dec.-Jan.). The central event was the pompe (πομπή), the procession, in which phalloi (φαλλοί) were carried by phallophoroi (φαλλοφόροι). Also participating in the pompe were kanephoroi (κανηφόροι – young girls carrying baskets), obeliaphoroi (ὀβελιαφόροι – who carried long loaves of bread), skaphephoroi (σκαφηφόροι – who carried other offerings), hydriaphoroi (ὑδριαφόροι – who carried jars of water), and askophoroi (ἀσκοφόροι – who carried jars of wine).