Oxmantown

thumb|Copy of John Speed's John Speed's Map of Dublin (1610)|1610 map of Dublin, showing "Ostmantowne" thumb|Herman Moll's 1714 map of Dublin thumb|Plan showing the streets and lots laid out on Oxmantown Green in 1655 Oxmantown was a suburb on the opposite bank of the Liffey from Dublin, in what is now the city's Northside. It was founded in the 12th century by Hiberno-Norse Dubliners or "Ostmen" who either migrated voluntarily or were expelled from inside of the city walls of Dublin after the Anglo-Norman invasion and the 1171 beheading of Hasculf, the last Hiberno-Norse King of Dublin by the invading army. The settlement was originally known as Ostmanby or Ostmantown.

The settlement was bounded on the east by the lands of St Mary's Abbey and on the west by Oxmantown Green, an extensive common. Oxmantown lay within the parish of St Michan's, which was the only church on the Northside until the parishes of St Mary's and St Paul's were formed in 1697 to cater to the district's burgeoning population.