Finglas is a northwestern outer suburb of Dublin, Ireland. It lies close to Junction 5 of the M50 motorway, and the N2 road. Nearby suburbs include Glasnevin and Ballymun; Dublin Airport is seven km (4.3 mi) to the north. Finglas lies mainly in the postal district of Dublin 11.

Dublin is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2022 census, the city council area had a population of 592,713, while Dublin City and its suburbs had a population of 1,263,219, and County Dublin had a population of 1,501,500.