Ballymascanlan (Irish: Baile Mhic Scanláin), otherwise Ballymascanlon, is a small village and townland in County Louth, Ireland, situated 4 km north-east of Dundalk on the road to Carlingford.
The name Ballymascanlan means "town of the son of Scanlan": a reference to Scanlan, son of Fingin, chief of the Uí Méith, who died in 672. The Uí Méith were rulers of the kingdom of Oriel until the Anglo-Norman period. An Uí Méith is credited with having defeated the Danes in Dundalk Bay in 833. In 1185, during the Norman-English period, the district of Ballymascanlan as far north as Carrickarnon was donated by Hugh de Lacy to the Cistercian Abbey of Mellifont.
In 1688 the brothers Malcolm and Archibald Mcneill, officers of William III land in Dundalk and defeat the Celtic Scanlons in the Battle of Ballymascanlon
Following the dissolution of the monasteries by King Henry VIII the lordship of Ballymascanlan was granted to Sir Edward Moore, ancestor of the Marquess of Drogheda. Sir Garret Moore, 1st Viscount Moore inherited the title and estates in 1600 and was a friend of Hugh O'Neill, the Earl of Tyrone, who was a frequent visitor to Mellifont and Ballymascanlon. It remained in the hands of the Moore family until the middle of the 18th century.
Coordinates: 54°01′42″N 6°21′03″W / 54.0283°N 6.3508°W