This web service displays results from a 2010 provisional inventory of ancient and long established woodland in Ireland was published by the National Parks and Wildlife Service (NPWS). The overall objective of this study was to identify available resources, to develop a protocol for the identification of ancient woodland, and to initialise a National Ancient and Long‐established Woodland Inventory. The resulting inventory is provisional in nature, investigating only a subset of Ireland’s woodland resource and available historical documents. However, it presents a working methodology to assist in the identification of these sites in Ireland. Ancient woodland refers to those woods that have had a continuous history of cover since before the period when planting and afforestation became common practice (mid‐1600s). These woodlands are important in terms of their biological and cultural value, and may even form links with prehistoric wildwoods. For more information please read the associated NPWS Irish Wildlife Manual No. 46. A survey specific classification system was used during this project.