Máenach mac Fíngin (died 661)[1] was a King of Munster from the Eóganacht Chaisil branch of the Eoganachta.
He was the son of Fíngen mac Áedo Duib (died 618), a previous king.
[2] His mother was Mór Muman (died 636), daughter of Áed Bennán mac Crimthainn of the Loch Lein.
[3] He succeeded Cúán mac Amalgado as king in 641[4] The annals provide no details of his reign.
His son Aillil was father of a later king of Munster Cormac mac Ailello (died 713).