Agon (Classical Greek ἀγών) is an ancient Greek term for a struggle or contest. This could be a contest in athletics, in chariot or horse racing, or in music or literature at a public festival in ancient Greece. Agon is the wordforming element in 'agony', explaining the concept of agon(y) in tragedy by its fundamental characters, the protagonist and antagonist.
In one sense, agon meant a contest or a competition in athletics, Particularly the Olympic Games (Ὀλυμπιακοὶ Ἀγῶνες). Agon was also a mythological personification of the contests listed above. This god was represented in a statue at Olympia with halteres (dumbbells) (ἁλτῆρες) in his hands. This statue was a work of Dionysius, and dedicated by Micythus of Rhegium.
Agon also referred to a challenge that was held in connection with religious festivals. With a further religious meaning as used in 1 Timothy 6:12 in the New Testament and defined by Strong's Concordance as, agón: a gathering, contest, struggle; as an (athletic) contest; hence, a struggle (in the soul).
In Ancient Greek drama, particularly Old Comedy (fifth century B.C.), agon refers to a contest or debate between two characters - the protagonist and the antagonist - in the highly structured Classical tragedies and dramas. The agon could also develop between an actor and the chorus or between two actors with half of the chorus supporting each. Through the argument of opposing principles, the agon in these performances resembled the dialectic dialogues of Plato. The meaning of the term has escaped the circumscriptions of its classical origins to signify, more generally, the conflict on which a literary work turns.