Alea or ALEA may refer to:

• Alea (Arcadia), a town of ancient Arcadia, located near the modern town in Argolis
• Alea (Thessaly), a town of ancient Thessaly
• Alea, Arcadia, a village in the municipal unit Tegea, Arcadia
• Alea, Argolis, a small town in Argolis

• Alabama Law Enforcement Agency (ALEA)
• American Law and Economics Association (ALEA)

• Alea (Greek soldier), origin of the word aleatoire (meaning "random")
• Alea (game), the earliest known tables game and possible ancestor of Backgammon
• Alea, originally a game-publishing subsidiary of Ravensburger, purchased by Heidelburger
• ALEA Ensemble, an Austrian ensemble for contemporary music
• Athena Alea, an epithet of goddess Athena.

• Alea iacta est
• Alia (disambiguation)