Harmonstown (Irish: Baile Hearman) is a small suburban locality straddling the boundary between modern-day Artane and Raheny. Historically what is now Harmonstown was mostly in Raheny (see the 1901 map in the Raheny article). The locality is bounded by the railway cutting, the Springdale Road Linear Park and Brookwood Avenue.
Harmonstown is located south of Artane and Coolock, and is across a railway bridge from the Ennafort / Cill Eanna part of Raheny and opposite the Edenmore part. It also borders Killester and Clontarf.
The area contains Harmonstown DART station, located on the mentioned railway bridge, the Dublin 5 An Post sorting office and, at the northern edge, one of Artane's churches; Harmonstown is divided between Raheny and Artane parishes in the Roman Catholic Church, and between the Parish of Raheny and the Parish of Coolock in the Church of Ireland. The townland of Harmonstown is within the civil parish of Clontarf but did not form part of the short-lived Clontarf Urban District.
On Harmonstown Road itself are shops, a pub, a Ford main dealer, a snooker hall and other businesses.
- "Harmonstown station". Railscot - Irish Railways. Retrieved 2007-09-02.