The Singapore Civil Defence Force (SCDF) is a uniformed organisation in Singapore under the Ministry of Home Affairs that provides emergency services such as firefighting, technical rescue, and emergency medical services, and coordinates national civil defence programme.

Singapore's first Fire Committee was formed in 1855. Prior to this, fires were attended to by uniformed groups which included the police, sepoys, marine soldiers and even convicts. On 7 September 1869, the Governor Major-General Sir Harry St. George Ord enacted the Fire Ordinance and appointed the Colonial Engineer as Chairman of the Fire Commission for Singapore. This Fire Commission was however later disbanded in 1884 due to poor organisation and difficult circumstances. In 1888, the Singapore Fire Brigade was established as a fully-equipped professional brigade with sufficient funding. By 1909, there were a total of three built stations servicing Singapore, namely Central Fire Station at Hill Street, Cross Street and Kallang Fire Stations. In 1980, the brigade was officially renamed the Singapore Fire Service (SFS).

In 1970, on the basis of elements of the SPF's Vigilante Corps, raised in the early 1960s, the Police Civil Defence Force was created under the purview of the Singapore Police Force. In 1982, the National Civil Defence Plan was launched which spearheaded the emergency preparedness for the nation at large and as a consequence of this plan majority of the SPF-VC's serving personnel joined the SPF-PCDF, which the plan designated as the nation's primary organization for civil defence and disaster response. With the enactment of the Civil Defence Act in 1986, the Singapore Civil Defence Force (SCDF), by now separate from the SPF proper, was established as an organisation under the Ministry of Home Affairs. In the same year, the Hotel New World disaster paved the way for joint operations between the SCDF and SFS. The SCDF and SFS were merged on 15 April 1989 into one organization.

The newly integrated SCDF mainly used facilities which were handed over from the Singapore Armed Forces (SAF) or the Singapore Police Force (SPF). Since the early 2000s, its headquarters and territorial divisions have all moved into purpose-built facilities. SCDF's involvement in regional disaster relief operations has also raised its profile significantly.

On 18 January 2009, SCDF was classified by INSARAG as a heavy urban search and rescue team, the highest level of urban search and rescue service.

SCDF is led by the Commissioner of the SCDF and three deputy commissioners, each in charge of Strategy & Corporate Services, Operations & Resilience and Future Technology & Public Safety. The SCDF is organised with one headquarter element commanding seven divisions. Of the latter, four (1st, 2nd, 3rd, and 4th Divisions) are territorial divisions; another two are training divisions, namely the Civil Defence Academy (CDA) and National Service Training Centre (NSTC) and can be activated as the 5th and 6th Divisions respectively in times of emergency; the eighth is the Marine Division, which was set up on 1 April 2012 with the capability and capacity to respond to marine fire and rescue incidents.

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HQ SCDF, Central Supply Base, SCDF Operations Centre, and Paya Lebar Fire Station are located in the Civil Defence Complex at Ubi.