Lynn (Irish: Lainn)[1] is a civil parish in County Westmeath, Ireland.

Lynn is one of 10 civil parishes in the barony of Fartullagh in the province of Leinster.

The neighbouring civil parishes are: Mullingar to the north, Killucan (barony of Farbill), to the east and Enniscoffey and Moylisker to the south.

In the early fourteenth century, the manor of Lynn was bought from the de Pitchford family by the English-born judge Sir John de Fressingfield and his wife Alice.

This article related to the geography of County Westmeath, Ireland is a stub.