Aghaderg is a parish in County Down. It is situated in mainly in the barony of Iveagh Upper, Upper Half, with two townlands in the barony of Iveagh Lower, Lower Half and a single townland in the barony of Iveagh Upper, Lower Half.
The civil contains the following settlements:
Aghaderg parish contains the following townlands:
- Glaskerbeg East
- Glaskerbeg West