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An Mhainistir Mhór | |
 Lavabo of Mellifont Abbey | |
  Location within Ireland | |
| Monastery information | |
|---|---|
| Order | Cistercians |
| Established | 1142 |
| Disestablished | 1539 |
| Reestablished | 1938 (different location) |
| Diocese | Armagh |
| People | |
| Founder(s) | Saint Malachy, Archbishop of Armagh |
| Architecture | |
| Status | Active |
| Style | Cistercian |
| Site | |
| Location | Collon, County Louth, Ireland |
| Coordinates | 53°44′32″N 6°27′59″W / 53.742317°N 6.466481°W |
| Public access | Yes |
| Reference no. | 93[1] |
Mellifont Abbey (Irish: An Mhainistir Mhór, literally 'the Big Monastery'), was a Cistercian abbey located close to Drogheda in County Louth, Ireland. It was the first abbey of the order to be built in Ireland. In 1152, it hosted the Synod of Kells-Mellifont. After its dissolution in 1539, the abbey became a private manor house. This saw the signing of the Treaty of Mellifont in 1603 and served as William of Orange's headquarters in 1690 during the Battle of the Boyne.
Today, the ruined abbey is a national monument of Ireland and accessible to the public. The English language name for the monastery, 'Mellifont', comes from the Latin phrase Melli-fons, meaning 'Font of Honey'.
- ^ "National Monuments in State Care: Ownership & Guardianship, Louth" (PDF). 4 March 2009. Retrieved 25 January 2018.