Horse worship is a pagan practice that existed in Europe in the Iron Age and perhaps the Bronze Age. The horse was seen as divine, as a sacred animal associated with a particular deity, or as a totem animal impersonating the king or warrior. Horse cults and horse sacrifice were originally a feature of Eurasian nomad cultures. While horse worship has been almost exclusively associated with Indo-European culture, by the Early Middle Ages it was also adopted by Turkic peoples.
Chronology of horse worship 
Bronze Age 
The Uffington White Horse, dating to between 1400 and 600 BC, is possible evidence of horse worship in the Bronze Age.
Iron Age 
The French archaeologist Patrice Méniel has demonstrated, based on examination of animal bones from many archaeological sites, a lack of hippophagy (horse eating) in ritual centres and burial sites in Gaul, although there is some evidence for hippophagy from earlier settlement sites in the same region.
Tacitus (Germania) mentions the use of white horses for divination by the Germanic tribes:
- But to this nation it is peculiar, to learn presages and admonitions divine from horses also. These are nourished by the State in the same sacred woods and groves, all milk-white and employed in no earthly labour. These yoked in the holy chariot, are accompanied by the Priest and the King, or the Chief of the Community, who both carefully observed his actions and neighing. Nor in any sort of augury is more faith and assurance reposed, not by the populace only, but even by the nobles, even by the Priests. These account themselves the ministers of the Gods, and the horses privy to his will.
Horse oracles are also attested in later times (see Arkona below).
There is some reason to believe that Poseidon, like other water gods, was originally conceived under the form of a horse. In Greek art, Poseidon rides a chariot that was pulled by a hippocampus or by horses that could ride on the sea, and sailors sometimes drowned horses as a sacrifice to Poseidon to ensure a safe voyage.
In the cave of Phigalia Demeter was, according to popular tradition, represented with the head and mane of a horse, possibly a relic of the time when a non-specialized corn-spirit bore this form. Her priests were called Poloi (Greek for "colts") in Laconia.
This seems related to the archaic myth by which Poseidon once pursued Demeter; She spurned his advances, turning herself into a mare so that she could hide in a herd of horses; he saw through the deception and became a stallion and captured her. Their child was a horse, Arion, which was capable of human speech.
Early mediaeval 
The Welsh legend of Rhiannon and the Irish legend of Macha, although first recorded in Christian times, may indicate memories of horse worship. The white horse of Rhiannon is another example of cultic use of white horses, which seems to be an Indo-European phenomenon.
The temple fortress of Arkona, at Cape Arkona on the German island of Rügen, was the religious centre of the Slavic Rani in the Early Middle Ages. The temple, dedicated to the deity Svantevit, housed an important horse oracle in Slavic times, where the behaviour of a white stallion could decide peace or war - recalling the above account by Tacitus.
See also 
- White horse (mythology)
- Horse burial
- horse sacrifice
- animal worship
- domestication of the horse
- Horse (zodiac)
- Méniel 1992 pp.38-45, 77-78, 131-143
- Nantonos & Ceffyl 2005
- Hyland p.6
- Hyland, Ann (2003) The Horse in the Ancient World. Stroud, Sutton Publishing. ISBN 0-7509-2160-9
- Méniel, Patrice Les Sacrifices d'animaux chez les gaulois. Paris, Editions Errance. ISBN 2-87772-068-3
- Nantonos & Ceffyl (2005) Geographical Distribution of Epona
- Tacitus, Germania. Thomas Gordon, translator. Available online
- W. H. Corkill, Horse Cults in Britain, Folklore (1950).
- Caught In The Between