In Greek mythology, the Titanomachy (/ˌtaɪtəˈnɒməki/ Greek: Τιτανομαχία Titanomakhia) was a ten-year series of battles fought in Thessaly, consisting of most of the Titans (an older generation of gods, based on Mount Othrys) fighting against the Olympians (the younger generations, who would come to reign on Mount Olympus) and their allies. This event is also known as the War of the Titans, Battle of the Titans, Battle of the Gods, or just the Titan War. The war was fought to decide which generation of gods would have domain over the Universe; it ended in victory for the Olympians.
Greeks of the Classical Age knew of several poems about the war between the gods and many of the Titans. The dominant one, and the only one that has survived, is the Theogony attributed to Hesiod. A lost epic, Titanomachia, attributed to the blind Thracian bard Thamyris, himself a legendary figure, was mentioned in passing in an essay On Music that was once attributed to Plutarch. The Titans also played a prominent role in the poems attributed to Orpheus. Although only scraps of the Orphic narratives survive, they show interesting differences from the Hesiodic tradition.