rathdown

Rathdown may refer to:

• Rathdown (County Dublin barony) an Irish administrative barony which gives its name to:
• Dublin Rathdown (Dáil constituency)
• Dún Laoghaire–Rathdown, a county in Ireland
• Baron Rathdown, a title in the Peerage of Ireland
• Rathdown, County Wicklow, an Irish administrative barony