Creevelea Abbey is an early 16th-century Franciscan friary and National Monument located in Dromahair, County Leitrim, Ireland. Although in ruins, Creevelea Abbey is still in use as a grave yard.

Creevelea Abbey is located west of Dromahair, on the west bank of the Bonet River.

Creevelea Friary was founded in 1508 by Eóghan O'Rourke, Lord of West Bréifne, and his wife Margaret O'Brian, daughter of a King of Thomond, as a daughter foundation of Donegal Abbey. The friary was accidentally burned in 1536, but was rebuilt by Brian Ballach O'Rourke. In 1590, Richard Bingham stabled his horses at Creevelea during his pursuit of Brian O'Rourke, who had sheltered survivors of the Spanish Armada. Dissolved c. 1598.

Sir Tadhg O'Rourke (d. 1605), last King of West Bréifne and Thaddeus Francis O'Rourke (d. 1735), Bishop of Killala are buried here. Another house was built for the friars in 1618 and Creevelea was reoccupied by friars in 1642. The Franciscans were again driven out by the New Model Army during the Cromwellian conquest of Ireland in the 1650s. After the Restoration, the Franciscans returned and continued to live in thatched cabins nearby. During the early 18th-century, pioneering antiquarian and Celticist Charles O'Conor of Bellanagare, a descendant of the local Gaelic nobility of Ireland, received his early education at a hedge school taught by the surviving Friars. Although it was once widely assumed that Gaelic Ireland completely missed Renaissance humanism and the revival of interest in the Classics, O'Conor later recalled that he was taught the Latin language using the grammar of Corderius, and the writings of Ovid, Suetonius, and Erasmus. O'Conor recalled that he was also taught the playing of the Celtic harp, as well as fencing and dancing. According to Tony Nugent, the surviving Franciscans also used a Megalithic tomb site in the nearby townland of Sranagarvanagh, or in Connaught Irish Srath na nGarbhánach, as a Mass rock, also during the 18th-century. A walking track has since been built to the site under a Fás scheme. The Abbey Church remained in use as living quarters until 1837.

The remains consist of the church (nave, chancel, transept and choir), chapter house, cloister and domestic buildings. The bell-tower was converted to living quarters in the 17th century. At one point in its history the church was covered with a thatched roof. Carved in the cloister is an image of Saint Francis of Assisi preaching to birds. The site also contained, as of 1870, many stone monuments to the local members of the Gaelic nobility of Ireland who lie buried there.

• Patrick O'Hely (c.1543 - 1579), Franciscan Friar who did his novitiate and final vows at Creevelea Abbey. After returning to Ireland following his consecration abroad as Bishop of Mayo, he was captured, tortured, and hanged outside the walls of Kilmallock as part of the Elizabethan era religious persecution of the Catholic Church in Ireland. Beatified in 1992 by Pope John Paul II as one of the 24 officially recognized Irish Catholic Martyrs. His feast day is June 20.

The site is preserved as a national monument.

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  Tower
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  Window with tracery
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  Cloister
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  Creevela Abbey 1791
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  Floorplan 1791