Arderin

Arderin
Ard Éireann
Arderin from the Glendine Gap
Highest point
Elevation	527 m (1,729 ft)
Prominence	420 m (1,380 ft)
Listing	Marilyn
Coordinates	53°02′17″N 7°39′14″W / 53.03806°N 7.65389°W / 53.03806; -7.65389Coordinates: 53°02′17″N 7°39′14″W / 53.03806°N 7.65389°W / 53.03806; -7.65389
Naming
Translation	Ireland's Height (Irish)
Geography
Arderin Laois & Offaly, Republic of Ireland
Parent range	Slieve Bloom Mountains
OSI/OSNI grid	S232989
Topo map	OSi Discovery 54

Arderin (Irish: Ard Éireann, meaning "Ireland's Height") is a mountain on the border between counties Laois and Offaly in Ireland. With a height of 527 metres (1,729 ft) it is the highest point in the Slieve Bloom Mountains and the 399th highest summit in Ireland. Uniquely it is the highest point in County Laois and County Offaly.

An Arderin is also a descriptive word for a specific category of Irish mountains in the series of lists maintained by Mountainviews.ie; those over 500m with a prominence of at least 30m. This list, along with other complementary ones, has been published in book form by Collins Press. Mountainviews.ie classifies a mountain as being above 500m, but also maintains a number of lists of hills below this threshold.