Ráth Chairn is a small village and Gaeltacht in County Meath, Ireland. It is about 55 km northwest of Dublin. Ráth Chairn Gaeltacht was founded in 1935 when 27 families from Connemara, mostly from Ceantar na nOileán, were settled on land previously acquired by the Irish Land Commission, followed by a further 11 families in 1937. In all 443 people moved to the area.

A Gaeltacht is a district of Ireland, either individually or collectively, where the Irish government recognises that the Irish language is the predominant vernacular, or language of the home. The Gaeltacht districts were first officially recognised during the 1920s in the early years of the Irish Free State, following the Gaelic revival, as part of a government policy aimed at restoring the Irish language.