Clankee (Irish: Clann Chaoich[1]) is a barony in County Cavan, Ireland.

[2][3][4] The barony name means "Clan (family) of the one-eyed"; cáech ("blind in one eye") was the nickname of the local Ua Raghallaigh (O'Reilly) chieftain Niall O'Reilly, son of Cathal na Beithí, son of Annadh Ó Raghallaigh (died 1256).

[5][6][7] The barony also is recorded under the name Clann Chaoich an Fheadha (Clankee of the lengths), Clann Chaoich Uachtarach (“Upper Clankee”) or Clann Chaoich na Seanchlainne (Clankee of the old family).

The MacTullys, McGargans, O’Clerys and O’Coyles were powerful families in the area.

[8] The barony of Clankee was created by 1609 in the Plantation of Ulster; it was archaically spelled Clonky.