Drumcliff or Drumcliffe (Irish: Droim Chliabh, meaning 'ridge of the baskets') is a village in County Sligo, Ireland. It is 8 km (5 mi) north of Sligo town on the N15 road on a low gravel ridge between the mountain of Ben Bulben and Drumcliff Bay. It is on the Drumcliff River, originally called the "Codnach", which drains Glencar Lake. Drumcliff is the resting place of the Irish poet W. B. Yeats. Drumcliff is in a civil parish of the same name.

The old name of Drumcliff was Cnoc na Teagh (trans. Hill of the House). The village is one of several possible locations in County Sligo for the settlement of Nagnata as marked on Claudius Ptolemy's early map of Ireland. The name Codnach means placid or even tempered river. A battle was fought on this river in A.M. 3656 (1538 BC) by the legendary Milesian monarch Tigearnmas.

An ancient topographical poem in the Dinnsenchus (Lore of Places) tells how the baskets in the name refer to the wicker frames of a fleet of boats that was once made here. The poem is part of a lost epic story involving the Fomorians in a raid on an island in the western ocean.

Drumcliff formed the western extremity of the kingdom of Bréifne (the eastern end was Kells), and the northern extremity of Tir Fhiacrach Múaidhe (Tireragh).

The Battle of the Book took place near Drumcliff between 555 AD and 561 AD.

The historian Mac Firbisigh mention a "Fort of Codhnach", known to be a fort near Drumcliff, although its location now is unknown.

St. Colmcille founded a monastery in Drumcliff in about 575. The monastery was of such importance that it gave its name to the territory of Cairbre Drom Cliabh in which it resides. The first abbot was St. Mothorian.^{[citation needed]}

Lord of Cairbre, Dunadhach, a noble protection, a famous man by whom hostages were held, A pious soldier of the race of Conn (lies interred) under hazel crosses at Drumcliff