Studies on the Irish Chironomidae are briefly reviewed. A checklist of 520 species and 20 species-level taxa is provided. Chironomus striatus Strenzke, 1959 is removed from the Irish list. Summary distribution data are given with accompanying maps depicting the known Irish and European distributions for the species currently on record from Ireland. Data from 22,648 species records up to December 2017 from 1,247 locations in the 32 Counties and 40 hydrometric areas and some off-shore islands of Ireland are summarised.