The new IUCN criteria version 3.1 and methodology of the regional assessment enables us to reduce the subjectivity of the assessment. The assessment of conservation status of dragonflies is not limited by the political and economic interests. The important limiting factor is the lack of relevant faunistic data. At present we know 5 830 dragonflies and damselflies. 2 446 taxa of dragonflies were assessed using the latest IUCN´s Red List criteria. Odonata are currently the insect group for which the global and regional assessment of conservation status has been completed. There is confirmed the presence of 69 taxa of dragonflies in Slovakia. 47 taxa of the dragonflies are listed in the last version of the Slovak Red List of dragonflies in 2001. The upcoming version of it will include from 20 to 25 species of dragonflies. The highest decrease will be their removal from the category of Least Concern.