Loughlinstown (Irish: Baile Uí Lachnáin, meaning 'O'Laughnan's town') is a southern Dublin suburb, located in Dún Laoghaire–Rathdown, on the N11 national road.

Loughlinstown is a corrupted English translation of the Irish name Baile Uí Lachnáin, meaning "O'Laughnan's town".

By 1541 they had been granted to the Goodman Family, who held them as "warden of the marches" protecting the southern border of the Pale from raids and incursions of the Wicklow Septs.

During the 1960s, one of the earliest stretches of dual carriageway in Ireland was built through the area, leaving the village scattered along the western side of the new road.

For years a large mature chestnut tree was located in the middle of the dual carriageway at its junction with the Wyatville Road.

The institution provided 600 places for the destitute of Dundrum, Blackrock, Stillorgan, Kingstown (Dún Laoghaire), Killiney, Glencullen, Rathmichael, Powerscourt, Bray and Delgany.

[10] The Luas Green Line isn’t far from Loughlinstown, the nearest stops are Cherrywood and Brides Glen, which provide a 40-minute journey to Dublin city centre.