Aaron is mentioned in the Quran in these verses:

[2:248] Their prophet said to them, “The sign of his kingship is that the Ark of the Covenant will be restored to you, bringing assurances from your Lord, and relics left by the people of Moses and the people of Aaron. It will be carried by the angels. This should be a convincing sign for you, if you are really believers.”

[4:163] We have inspired you, as we inspired Noah and the prophets after him. And we inspired Abraham, Ismail, Isaac, Jacob, the Patriarchs, Jesus, Job, Jonah, Aaron, and Solomon. And we gave David the Psalms.

[6:84] And we granted him Isaac and Jacob, and we guided both of them. Similarly, we guided Noah before that, and from his descendants (we guided) David, Solomon, Job, Joseph, Moses, and Aaron. We thus reward the righteous.

[7:122] “The Lord of Moses and Aaron.”

[7:142] We summoned Moses for thirty nights, and completed them by adding ten. Thus, the audience with his Lord lasted forty nights. Moses said to his brother Aaron, “Stay here with my people, maintain righteousness, and do not follow the ways of the corruptors.”

[7:150] When Moses returned to his people, angry and disappointed, he said, “What a terrible thing you have done in my absence! Could you not wait for the commandments of your Lord?” He threw down the tablets, and took hold of his brother’s head, pulling him towards himself. (Aaron) said, “Son of my mother, the people took advantage of my weakness, and almost killed me. Let not my enemies rejoice, and do not count me with the transgressing people.”

[7:151] (Moses) said, “My Lord, forgive me and my brother, and admit us into Your mercy. Of all the merciful ones, You are the Most Merciful.”

[10:75] Then we sent after them Moses and Aaron to Pharaoh and his group, with our proofs. But they turned arrogant; and were transgressing people.

[10:89] He said, “Your prayer has been answered (O Moses and Aaron), so be steadfast, and do not follow the ways of those who do not know.”

[19:28] “O descendant of Aaron, your father was not a bad man, nor was your mother unchaste.”

[19:53] And we granted him, out of our mercy, his brother Aaron as a prophet.

[20:29] “And appoint an assistant for me from my family.

[20:30] “My brother Aaron.

[20:31] “Strengthen me with him.

[20:32] “Let him be my partner in this matter.

[20:33] “That we may glorify You frequently.

[20:34] “And commemorate You frequently.

[20:35] “You are Seer of us.”

[20:70] The magicians fell prostrate, saying, “We believe in the Lord of Aaron and Moses.”

[20:90] And Aaron had told them, “O my people, this is a test for you. Your only Lord is the Most Gracious, so follow me, and obey my commands.”

[20:91] They said, “We will continue to worship it, until Moses comes back.”

[20:92] (Moses) said, “O Aaron, what is it that prevented you, when you saw them go astray,

[20:93] “from following my orders? Have you rebelled against me?”

[20:94] He said, “O son of my mother; do not pull me by my beard and my head. I was afraid that you might say, `You have divided the Children of Israel, and disobeyed my orders.’ “

[21:48] We gave Moses and Aaron the Statute Book, a beacon, and a reminder for the righteous.

[23:45] Then we sent Moses and his brother Aaron with our revelations and a profound proof.

[25:35] We have given Moses the scripture, and appointed his brother Aaron to be his assistant.

[25:36] We said, “Go, both of you, to the people who rejected our revelations,” and subsequently, we utterly annihilated the rejectors.

[26:13] “I may lose my temper. My tongue gets tied; send for my brother Aaron.

[26:14] “Also, they consider me a fugitive; I fear lest they kill me.”

[26:48] “The Lord of Moses and Aaron.”

[28:34] “Also, my brother Aaron is more eloquent than I. Send him with me as a helper to confirm and strengthen me. I fear lest they disbelieve me.”

[28:35] He said, “We will strengthen you with your brother, and we will provide you both with manifest authority. Thus, they will not be able to touch either one of you. With our miracles, the two of you, together with those who follow you, will be the victors.”

[37:114] We also blessed Moses and Aaron.

[37:115] We delivered them and their people from the great disaster.

[37:116] We supported them, until they became the winners.

[37:117] We gave both of them the profound scripture.

[37:118] We guided them in the right path.

[37:119] We preserved their history for subsequent generations.

[37:120] Peace be upon Moses and Aaron.

[37:121] We thus reward the righteous.

[37:122] Both of them were among our righteous servants.

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