Anthropomorphism (from the Greek words "ánthrōpos" (ἄνθρωπος), meaning "human," and "morphē" (μορφή), meaning "form" or "shape") is the attribution of human form, character, or attributes to non-human entities. It is considered to be an innate tendency of human psychology. Personification is the related attribution of human form and characteristics to abstract concepts such as nations, emotions, and natural forces, such as seasons and weather. Both have ancient roots as storytelling and artistic devices, and most cultures have traditional fables with anthropomorphized animals as characters. People have also routinely attributed human emotions and behavioral traits to wild as well as domesticated animals.

Anthropomorphism and anthropomorphization derive from the verb form anthropomorphize, itself derived from the Greek ánthrōpos (ἄνθρωπος, lit. "human") and morphē (μορφή, "form"). It is first attested in 1753, originally in reference to the heresy of applying a human form to the Christian God.

From the beginnings of human behavioral modernity in the Upper Paleolithic, about 40,000 years ago, examples of zoomorphic (animal-shaped) works of art occur that may represent the earliest known evidence of anthropomorphism. One of the oldest known is an ivory sculpture, the Löwenmensch figurine, Germany, a human-shaped figurine with the head of a lioness or lion, determined to be about 32,000 years old.

It is not possible to say what these prehistoric artworks represent. A more recent example is The Sorcerer, an enigmatic cave painting from the Trois-Frères Cave, Ariège, France: the figure's significance is unknown, but it is usually interpreted as some kind of great spirit or master of the animals. In either case there is an element of anthropomorphism.

This anthropomorphic art has been linked by archaeologist Steven Mithen with the emergence of more systematic hunting practices in the Upper Palaeolithic. He proposes that these are the product of a change in the architecture of the human mind, an increasing fluidity between the natural history and social intelligences^{[clarification needed]}, where anthropomorphism allowed hunters to identify empathetically with hunted animals and better predict their movements.

In religion and mythology, anthropomorphism is the perception of a divine being or beings in human form, or the recognition of human qualities in these beings.

Ancient mythologies frequently represented the divine as deities with human forms and qualities. They resemble human beings not only in appearance and personality; they exhibited many human behaviors that were used to explain natural phenomena, creation, and historical events. The deities fell in love, married, had children, fought battles, wielded weapons, and rode horses and chariots. They feasted on special foods, and sometimes required sacrifices of food, beverage, and sacred objects to be made by human beings. Some anthropomorphic deities represented specific human concepts, such as love, war, fertility, beauty, or the seasons. Anthropomorphic deities exhibited human qualities such as beauty, wisdom, and power, and sometimes human weaknesses such as greed, hatred, jealousy, and uncontrollable anger. Greek deities such as Zeus and Apollo often were depicted in human form exhibiting both commendable and despicable human traits. Anthropomorphism in this case is, more specifically, anthropotheism.

From the perspective of adherents to religions in which humans were created in the form of the divine, the phenomenon may be considered theomorphism, or the giving of divine qualities to humans.