Iapetus (disambiguation) explained

Iapetus is a Titan in Greek mythology.

Iapetus may also refer to:

• Iapetus (moon), one of the planet Saturn's moons, named for the mythological Titan
• Iapetus Ocean, an ancient ocean between the paleocontinents Laurentia and Baltica
• Iapetus suture, line of closure of the Iapetus Ocean