Castlereagh (disambiguation)

Castlereagh is the name of:

• Northern Ireland's District Castlereagh in Belfast
• Anglo -Irish statesman Robert Stewart, Viscount Castlereagh (1769-1822)
• The Australian community Castlereagh, a suburb of Sydney
• Both Castlereagh River, rivers in Australia
• The Castlereagh Highway in New South Wales

In addition, a community exists in the Republic of Ireland with the letters Castlerea

• Disambiguation