Lut ibn Haran (Arabic: لوط, romanized: Lūṭ, [luːtˁ]) is a prophet and messenger of God who was mentioned in the Qur'an. According to Islamic tradition, Lut was born to Haran and spent his younger years in Ur, later migrating to Canaan with his uncle Abraham. He was sent to the cities of Sodom and Gomorrah as a prophet, and was commanded to preach to their inhabitants on monotheism.

Though Lut was not born among the people he'd been sent to preach to, the people of Sodom are still regarded as his "brethren" (Arabic: إِخْوَٰن, romanized: ikhwān) in the Qur'an. Like the Biblical narrative, the Qur'an states that Lut's messages were ignored by the inhabitants of the cities, and Sodom and Gomorrah were subsequently destroyed. The destruction of the cities is traditionally presented as a warning against homosexuality in Islam as well as other things.

While the Qur'an does not elaborate upon Lut's later life, Islam holds that all prophets were examples of moral and spiritual 'righteousness'.^{[clarification needed]}

Muslim tradition is debated about who Abraham's father is. Some maintain that his father was Terah and his uncle was Azar (Arabic: آزر, romanized: Āzar), which could be derived from the Syriac Athar. Other's believe that Azar was Abraham's father and the same person as Terah. Abraham had two children, Isaac and Ismael, who both later became prophets. Abraham's nephew is said to have been the prophet Lut, who was one of the other people who migrated with Abraham out of their community. Abraham himself is said to have been a descendant of Nuh through his son Shem.

The Qur'an states that one day, a group of angels visited Abraham as guests in the guise of men in order to inform him of the fact that his wife Sarah was pregnant with Isaac. While there, they also told him that they had been sent by God to the "guilty people" of Lut to destroy them with "a shower of stones of clay". Lut and those who believed in him, were to be spared, but his wife was to die in the destruction, with the angels stating that "she is of those who lag behind". The Qur'an also draws upon Lot's wife as an "example for the unbelievers" as she was married to a righteous man but refused to believe in his message and was thus condemned to Hell.

The people of the twin cities transgressed against the bounds of God. According to the Qur'an, their sins included inhospitality and robbery. They hated strangers and robbed travellers, apart from other abuses and rape. It was their sin of sexual misconduct as well which was seen as particularly egregious, with Lut strongly chiding them for approaching men with sexual desire instead of women. Lut told and tried to help them to abandon their sinful ways, but they ridiculed him and threatened to evict him from the cities. Lut prayed to God and begged to be saved from the consequences of their sinful acts.

Then three angels, disguised as handsome men, came to Lut as guests. He grieved the men, as he felt powerlessness to protect them from the people of the cities. The cities' residents becoming aware of the visitors demanded that Lot surrender his guests to them. Distressed and fearful that they would incur the wrath of God, suggested rather lawful marriage to his daughters as pious and purer alternatives to their unlawful wishes, and perhaps as a source of guidance. But they were unrelenting and replied "You certainly know that we have no need for your daughters. You already know what we desire!", referring to his male guests.

The exegetes Ibn Kathir, Al-Qurtubi and Al-Tabari do not read 'daughters' to mean Lot's literal daughters. They argue that since a prophet is like a father to his nation, Lot was directing the evildoers to turn away from their sins and engage in healthy and pious relationships with the daughters of the nation, i.e. women in general.