Downhill is a small village and townland near Castlerock in County Londonderry, Northern Ireland.

It is situated within Causeway Coast and Glens district.

Lewis) in their childhood, when, in July 1901, their nurse took them for a visit while on a holiday in Castlerock.

The area where Downhill is located was formerly called Dunbo, derived from the Irish Dún Bó, meaning "fort of the cows".

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