The Crumlin Road is a main road in north-west Belfast, Northern Ireland. The road runs from north of Belfast City Centre for about four miles to the outskirts of the city. It also forms part of the longer A52 road which leads out of Belfast to the town of Crumlin (). The lower section of the road houses a number of historic buildings, including the city's former law courts and prison, whilst the road encompasses several large housing areas, including Ardoyne, Ballysillan () and Ligoniel ().

Lower Crumlin Road

The Crumlin Road begins at Carlisle Circus, a roundabout north of the city centre just past the Westlink motorway. It is one of four exits from Carlisle Circus, the others being the Antrim Road, a major arterial and residential route that forms part of the A6, Clifton Street which leads back to the centre, and Denmark Street which leads to the area of the lower Shankill Road. The lowest section of the road contains a number of buildings of local and historic interest. The Mater Infirmorum Hospital, known colloquially as the Mater, is found just past Carlisle Circus and provides healthcare to the north of the city as well as the surrounding area. A 19th-century structure, the hospital is beside the derelict Crumlin Road Gaol which, from 1846 to 1996 was the main prison in Belfast. After a number years of dereliction the venue opened as tourist attraction in 2013 and offers guided tours and venue hire. Facing the prison is the Crumlin Road Courthouse, which now also lies empty. Both buildings were designed by renowned local architect Charles Lanyon.

The Freemasons' Hall, the headquarters for a number of Masonic Lodges attached to the Provincial Grand Lodge of Antrim is adjacent to the prison. The hall was built in 1939, replacing an earlier building further along the Crumlin Road.

Oldpark to Ardoyne

The road is intersected by Agnes Street and Clifton Park Avenue and at this section the Oldpark Road divides off. At this point the Crumlin Road remains a largely loyalist area although with much of the Oldpark Road republican it is witness to a series of sectarian interfaces. Belfast City Council has converted a section of waste ground at this junction into a greenfield space whilst local shops have also been redeveloped. Significant levels of new housing have also been built here and as of 2011 this area is still undergoing redevelopment. St Mary's Church of Ireland, another 19th-century building, is also to be found in this part of the road and it is noted for its historic pipe organ. A Presbyterian church further up the road also dates from the 19th century whilst further up the road, facing the Ardoyne area there is a Roman Catholic Church, the Holy Cross Church.

Commercially this area of the Crumlin Road contains some shops, notably a number of cash and carry and similar wholesale retail outlets on the Hillview Road, a conduit linking the Crumlin and Oldpark Roads. Historically however one of the most important commercial properties was the Crumlin Road mill. The mill was built for William Ewart, a cotton trader and politician who switched his interests to the production of linen, which at the time became the leading industry in the city. During the Second World War the mill was converted from the production of linen to the manufacture of munitions. The mill employed thousands of local people, mostly young women who were known locally as "millies". Although the mill is no longer in operation its industrial heritage is commemorated in a nearby statue of one such "Milly". The area around the mill, which straddles the republican Ardoyne area and the loyalist Shankill and Woodvale areas is a major interface area on the Crumlin Road with Flax Street, which runs along the side of the mill, ending in a peace line. Similarly access to the Crumlin Road from Leopold Street and Columbia Street, both part of the loyalist Woodvale area, is also blocked by peace lines. Another local mill, Edenderry Mill, which dates back to Victorian times, has been converted into an apartment complex consisting of 55 flats.

Interface areas

The Crumlin Road reaches another junction just past the Holy Cross Church, where a number of streets branch off into different areas of the city. The Ardoyne Road is an interface area, containing both republican and loyalist sections, and it was the scene of the Holy Cross dispute, a series of clashes between the two communities at a Catholic girls school in 2001 and 2002. The school is close to Alliance Avenue, the effective dividing line between republican Ardoyne and loyalist Glenbryn, and the site of another peace line. The aforementioned junction also leads to Brompton Road, part of Ardoyne, the Woodvale Road, which leads backs down to the Shankill Road, and Twaddell Avenue, which leads to the loyalist Ballygomartin Road. The roundabout at this junction has been redeveloped as part of the council's initiatives aimed at regenerating the area. In 2013 the end of Twaddell Avenue, facing Ardoyne, became the site of a loyalist protest camp in support of the Orange Order, who had been barred from marching past Ardoyne by the Parades Commission. The protest, which has seen clashes between loyalists and police, is ongoing as of October 2013 with organisers sing that they are prepared to remain at the location until Christmas 2013 or even longer. As of February 2014 a presence is still maintained at the protest, with policing costs estimated at £7 million. Twaddell Avenue itself was named after assassinated Unionist politician William Twaddell.

Past the roundabout the Crumlin Road is largely made up of private housing for around a mile. Parts of the road in this area border on Forthriver Park, which separates the Crumlin Road from the Glencairn estate, whilst the Mercy Primary School is also found in this area. Ardoyne library is also located in this area, immediately after the roundabout.

Ballysillan and upper Crumlin Road

The Ballysillan Road leads off the Crumlin Road and is a major area of housing, containing the Silverstream and Carr's Glen districts. The Ballysillan Road continues as far as the North Circular Road, which, in turn, links to the Antrim Road, which also began at Carlisle Circus. During the Northern Ireland Troubles Ballysillan was noted as a centre for loyalist paramilitary activity and was the home base of "D Company" of the Ulster Volunteer Force (UVF) under the command of John Bingham.Taylor, Peter (1999). Loyalists. London: Bloomsbury Publishing. p.196 Along with Glenbryn, Ballysillan was also at the centre of a loyalist feud in 2003 when Jimbo Simpson, who had recently been ousted as head of the North Belfast Brigade of the Ulster Defence Association (UDA), attacked a number of houses in the area as part of a failed attempt to retake control of the Brigade and force out his replacement William Borland.Ian S. Wood, Crimes of Loyalty: A History of the UDA, Edinburgh University Press, 2006, p. 304 The Crumlin Road entrance to Ballysillan houses another historic church, the Ballysillan Presbyterian Church. Due to its elevated and exposed location Ballysillan, which takes its name from an Irish language expression meaning "townland of the willow grove", is one of the coldest areas of the city during winter.David Harvey, Belfast Trolleybuses, Amberley Publishing, 2010, p. 68

Further up the road, in what is still part of Ballysillan but what is frequently known as Glenbank, another interface area is found around Ligoniel Road and the area known as Legoniel (the road is spelt Ligoniel, whilst the electoral ward is spelt Legoniel, despite referring to the same area). Glenbank remains predominantly loyalist whilst much of Legoniel is republican and was noted as an area of Provisional Irish Republican Army activity during the Troubles. The 1971 Scottish soldiers' killings, in which three members of the British Army were killed by the PIRA, took place in this area. There is a small area of shops on the Crumlin Road around the base of the Ligoniel Road as well as an Elim Pentecostal Church. The Ligoniel Road, which changes its name to the Ballyhill Road soon after it leaves the urban area, eventually joins the A52 close to RAF Nutts Corner.

The upper end of the Crumlin Road is much less densely populated with much of the road passing through fields and wilderness areas, although the road continues to overlook the estates of Ballysillan on lower lands below the upper Crumlin Road. The road turns sharply near the entrance to Cavehill Country Park, veering in a south-westerly direction towards Crumlin. At this juncture the Upper Hightown Road forks off, ultimately linking the area with the Glengormley area of Newtownabbey. From this point on the Crumlin Road continues for around a mile and a half through a largely rural area before merging with the Ballyutoag Road.

The A52 The Crumlin Road forms the Belfast section of the A52, an A road linking the city to Crumlin, County Antrim. The A52 is known by a number of street names with it changing from the Crumlin Road to Ballyutoag Road () once it leaves the urban area. It is subsequently known as the Ballykeel Road () and then the Belfast Road until the junction with the A26 in Crumlin. It continues as the Nutts Corner Road into the centre of Crumlin.

Politics Crumlin Road is part of the North Belfast parliamentary constituency and its Assembly equivalent. In the House of Commons it is represented by John Finucane of Sinn Féin whilst in the Northern Ireland Assembly the MLAs are Gerry Kelly and Carál Ní Chuilín of Sinn Féin, Philip Brett and Brian Kingston of the DUP, and the Alliance's Nuala McAllister. Long-serving DUP MLA Nelson McCausland failed to get re-elected to the constituency in the 2017 Northern Ireland Assembly election and the SDLP's Nichola Mallon in the 2022 Northern Ireland Assembly election.

The Troubles

As an interface area containing considerable Protestant and Catholic populations the Crumlin Road was the scene of a number of murders and attacks during the course of the Northern Ireland Troubles.

A series of attacks occurred on the road in 1972, mainly carried out by loyalist groups. The Red Hand Commando murdered two Catholic civilians on the road, one on 8 February and another on 11 November. In between the UVF, with which group was closely linked, murdered a Catholic on 15 April whilst on 30 November the UDA killed another Catholic outside the Mater Hospital. Meanwhile, on 21 July 1972, as part of its Bloody Friday series of bomb attacks, the PIRA exploded a device at a petrol station on the road, albeit without deaths. A further PIRA attack occurred on 19 November 1974 when gunmen entered a glazier's shop and shot Jim Anderson and fellow UDA veteran Billy Hull. Although both were wounded neither man died in the attack.Henry McDonald & Jim Cusack, UDA – Inside the Heart of Loyalist Terror, Penguin Ireland, 2004, p. 90

Activity continued and on 21 March 1975 a Protestant civilian died four months after being shot by the UVF during a bank robbery on the road whilst on 10 June a UVF member was killed by the PIRA in his shop. The following year the UDA killed two Catholics on a bus on 17 June whilst on 28 October a joint operation by the UVF and UDA saw gunmen enter the Mater Hospital where they shot and killed former Sinn Féin vice-president Máire Drumm who was a patient at the time.