Swinford, historically called Swineford, is a town in County Mayo, Ireland. It is surrounded by the settlements of Midfield, Meelick, Culmore, Cloonaghboy, Killasser and other villages. It is on the N5 road, located 18 km (11 mi) from Ireland West Airport Knock (formerly known as Knock International Airport). Situated on a tributary of the River Moy, Swinford is known for its fishing waters, including the Callow lakes and the lakes of Conn and Cullin. Swinford was bypassed in 1993 by the N5 route and was the first town in Mayo to be bypassed. The town was the only urban centre in County Mayo to experience a population decline in the 2011 census.
Swinford is used for the filming of TV show Hardy Bucks, as the fictional town of Castletown.