Dublin Fire Brigade is the fire and rescue service and ambulance service for County Dublin, including Dublin city, in Ireland. It is a local authority service, operated by Dublin City Council on behalf of that council and those of Fingal, Dún Laoghaire–Rathdown and South Dublin. There are currently 14 fire stations staffed by DFB, 12 of which are full-time, the other 2 are "retained" and operate on call 24/7 365 days a year with up to 500 calls per year. Full-time stations are staffed by shifts across 4 watches. There are currently over 963 active firefighter/paramedic personnel making it by far the largest fire service based on personnel and resources in Ireland.

County Dublin is a county in Ireland, and holds its capital city, Dublin. It is located on the island's east coast, within the province of Leinster. Until 1994, County Dublin was a single local government area; in that year, the county council was divided into three new administrative counties: Dún Laoghaire–Rathdown, Fingal and South Dublin. The three administrative counties together with Dublin City proper form a NUTS III statistical region of Ireland. County Dublin remains a single administrative unit for the purposes of the courts and Dublin County combined with Dublin City forms the Judicial County of Dublin, including Dublin Circuit Court, the Dublin County Registrar and the Dublin Metropolitan District Court). Dublin also sees law enforcement and fire services administered county-wide.