- Source: Castlereagh Upper
- Sydney
- Daftar daerah pemilihan Parlemen Britania Raya
- Distrik pemilihan di New South Wales
- Isaac Brock
- Castlereagh Upper
- Castlereagh
- Robert Stewart, Viscount Castlereagh
- Killyleagh
- Upper Castlereagh Public School
- Castlereagh, New South Wales
- County Down
- Dufferin (barony)
- Castlereagh (County Down barony)
- Donaghadee
Castlereagh Upper (named after the former barony of Castlereagh) is a historic barony in County Down, Northern Ireland. It was created by 1841 with the division of Castlereagh into two. It is bordered by eight other baronies: Castlereagh Lower and Dufferin to the east; Lecale Lower and Kinelarty to the south; Iveagh Lower, Lower Half, Iveagh Lower, Upper Half, and Massereene Upper to the west; and Belfast Upper to the north.
List of settlements
Below is a list of settlements in Castlereagh Upper:
= Cities
=Belfast
Lisburn
= Towns
=Carryduff
= Villages
=Ballygowan
Kilmore
Saintfield
= Population centres
=Ballymacarrett
Newtownbreda
List of civil parishes
Below is a list of civil parishes in Castlereagh Upper:
Blaris (also partly in baronies of Iveagh Lower, Upper Half and Massereene Upper)
Comber (also partly in barony of Castlereagh Lower)
Drumbeg (also partly in barony of Belfast Upper)
Drumbo
Killaney
Killinchy (also partly in baronies of Castlereagh Lower and Dufferin)
Killyleagh (one townland, rest in barony of Dufferin)
Kilmore (also partly in barony of Kinelarty)
Knockbreda (also partly in barony of Castlereagh Lower)
Lambeg (also partly in barony of Belfast Upper)
Saintfield