Manchan of Min Droichit

Manchan of Min Droichit was an Irish scholar and abbot who died around 652. He is venerated as a saint in the Western Church.

He was abbot of Min Droichit, now Mondrehid, in the barony of Upper Ossory, County Offaly. His name is also attached to Dissert Gallen in County Laois. Latin sources mention him twice as a scholar whose authority still mattered after his death. An anonymous Irishman, known today as the Irish Pseudo-⁠Augustine, names a Manchianus, called father and wise man, in the preface to a work of 655 on the miracles of Holy Scripture, and appears to have been his pupil. Also, an Irish commentary on the Catholic Epistles cites the view of "M., our teacher" on the Epistle of James, who may be he.

He is probably the same as Manchín, patron of Coolcashin in the diocese of Ossory, whose feast in the Irish martyrologies falls on 2 January.