Rostrevor
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![Rostrevor welcome sign in Irish and English, with Slieve Meen in the background](/Images/godic/202502/08/Bilingual_welcome_sign_Rostrevor1004.jpg")
- For the place in Adelaide, South Australia, see Rostrevor, South Australia.
Rostrevor is a village and townland in County Down, Northern Ireland. It is within the Newry and Mourne District Council area. It lies at the foot of Slieve Martin on the coast of Carlingford Lough. The Kilbroney River flows through the village.
Rostrevor had a population of 2,433 in the 2001 Census. The village is known for its folk music festival, Fiddler's Green Festival.