Map - Coolock

Coolock is a large suburban area, centred on a village, on Dublin city's Northside in Ireland. Coolock is crossed by the Santry River, a prominent feature in the middle of the district, with a linear park and ponds. The Coolock suburban area encompasses parts of three Dublin postal districts: Dublin 5, Dublin 13 and Dublin 17.

The extensive civil parish of Coolock takes in the land between the Tonlegee Road (as far as Donaghmede) and the Malahide Road, as well as the lands on either side of the Malahide Road between Darndale and Artane, and the lands either side of the Oscar Traynor Road on the approach to Santry.

Coolock is also the name of the barony which accounts for most of north Dublin city, from the coast as far as Phoenix Park, and stretching north as far as Swords.

Coolock has a history dating back over 3,500 years – a Bronze-Age burial site in the area dates back to 1500 BC. The settlement grew up around a small early-Christian church. A Catholic church, St. John's, was later built in the area (see Parish of Coolock (Roman Catholic) and Coolock parish (Church of Ireland) for more). The feudal barony of Coolock was granted in 1199 by Henry II to the Archbishop of Dublin.

Coolock remained a small village until the 1950s, with lands around the village being further developed over time, notably Bonnybrook and Kilmore West, between which a new centre to the area formed. At one time the old village was on the Malahide Road but that road was diverted and now passes slightly to the east of the village; in the meantime, a secondary hamlet, Newtown Coolock, developed further north.

Later again, lands in the north of Coolock were developed to form the new districts of Darndale and Priorswood.