Cormac Cruinn Ó Máille (died 1384) was an Irish noble.
Ó Máille was a grandson of Eoghan mac Diarmait Ó Máille, a brother of Domnall Ruadh O Maille (died 1337).
Cormac was a son of Domnall mac Eoghan, and had brothers Eoghan, Brian, Cormac Buadhach, Ruaibh.
The Annals of the Four Masters record that "A meeting took place between O'Flaherty and O'Malley, but a quarrel arose between them, in which Owen O'Malley, Cormac O'Malley (i.e., Cormac Cruinn) and many others besides these, were slain by the people of O'Flaherty."
This biography of an Irish noble is a stub.