Acteon may refer to:

• Acteon (gastropod), a genus of small sea snails
• Actaeon, a figure in Greek mythology
• Actéon, an opera by Marc-Antoine Charpentier inspired by the story of Actaeon
• Acteón (film), a Spanish film
• HMS Actaeon or HMS Acteon, one of several warships of the Royal Navy by that name
• Acteon Group, a group of islands in French Polynesia
• Acteon Group Ltd, a UK-based company in the oil and gas industry

Actéon (Actaeon) is a Pastorale in the form of a miniature tragédie en musique in six scenes by Marc-Antoine Charpentier, Opus H 481, based on a Greek myth.