| Arderin | |
| Elevation M: | 527 |
| Prominence M: | 420 |
| Range: | Slieve Bloom Mountains |
| Location: | Counties Laois & Offaly, Ireland |
| Translation: | Ireland's Height |
| Language: | Irish |
| Map: | Ireland |
| Coordinates: | 53.0381°N -7.6539°W |
| Topo: | OSi Discovery 54 |
| Grid Ref Ireland: | S232989 |
Arderin 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 is the highest point in both counties.[1]
An Arderin is also a descriptive word for a specific category of Irish mountains in the series of lists maintained by Irish mountain database, MountainViews; 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.[2] Mountainviews.ie classifies a mountain as being above 500m, but also maintains a number of lists of hills below this threshold.