Homer (Ancient Greek: Ὅμηρος, Hómēros) was a legendary Greek poet traditionally said to be the author of the Iliad and the Odyssey, two epic poems that are foundational works of ancient Greek literature. Widely regarded as one of the most revered and influential authors in history, Homer's contributions have shaped much of Western literature and culture.

The Iliad focuses on a quarrel between King Agamemnon and the warrior Achilles during the last year of the Trojan War, while the Odyssey follows the ten-year journey of Odysseus, king of Ithaca, back to his home after the fall of Troy. The works are written in Homeric Greek, a literary language with a mix of Ionic and Aeolic dialects. Although primarily known for their tragic and serious themes, these epics also contain comedic elements.

The creation and authorship of the Iliad and the Odyssey are subjects of ongoing scholarly debate, with some questioning whether they were composed by a single individual. The most common ancient account of Homer describes him as a blind bard from Ionia. Recognized for fostering ideals of heroism and honor, Homer has been taught and celebrated throughout history, from Plato's reference to him as one who "has taught Greece," to Alexander Pope's acknowledgment of his status as the "greatest of poets."

Homer's works have inspired countless other pieces of literature, music, art, and film over the centuries and continue to be a central part of the Western canon.