Three Ages may refer to:
Three Ages, a black-and-white American comedy film The Three Ages of Man and Death, a 16th-century painting by Hans Baldung Three-age system, a series of ages defined by the use of stone, bronze and iron The three stages of human progress, a progression proposed by Lewis H. Morgan in Ancient Society Three Ages of Buddhism, three time divisions of the religion The Three Ages of the Interior Life, a book by Reginald Garrigou-Lagrange The Three Ages before and during the events of Lord of the Rings, in Tolkien's legendarium.