Challenging the common notion that mythological comedies simply burlesque stories found in epic and tragedy, this dissertation shows that comic poets were active participants in creating and transmitting myths and argues that their mythical innovations influenced accounts found in tragedy and prose mythography. Although no complete Greek mythological comedy survives, hundreds of fragments and titles reveal that this type of drama was extremely popular; they were staged in Greece, Sicily, and Southern Italy and make up about one-half of all comedies produced in some periods. These fragments, supplemented by Plautus' Amphitruo (the only nearly complete mythological comedy), vase-paintings, and ancient testimonia, shed light on the vibrant tra...