Derrynoose (from Irish Doire Núis, meaning 'oakwood of new milk')[1] is a village and civil parish in south County Armagh, Northern Ireland, 4.5 km south-west of Keady.

[3] Derrynoose is classed as Rural according to the Statistical Classification and Delineation of Settlements Report 2005.

The local GAA club, St Mochua's (Cumann Naomh Mochua), is the main sporting outlet for the community and plays Gaelic Football in the Intermediate league and championship in Armagh and hurling in the Senior league and championship.

[5] There are a few local businesses including A&M Commercials, The Derryvale Inn pub, Albert Keenan Coal & Oil Armagh Trading Ltd, and M&S Freight Forwarding Ltd.

Places of interest include "The Standing Stone", St Mochua's Well, "The Stations of The Cross", St Mochua's Chapel, "The Old Chapel Ruins and Graveyard", The Emigration Stone and Listrakelt Fort.