A checklist, containing all discribed Nepticulidae from the western palaearctic region, is provided. All species-group names given to western palaeartic species are listed, including those in synonymy, whether available or not. Eleven new synonymies are established at generic level, and 18 at species level; 48 new combinations are made and two lectotypes are designated. The arrangement of species reflects present phylogenetic opinion. Hostplant data are provided for each species, and a systematic catalogue concludes this paper.