This master thesis aims to give a monographic overview on the ants of Carinthia. The history of research started in 1855 with Gustav Mayr. Milestones of myrmecology in Carinthia were set by Emil Hölzel, who published the book ?Ameisen Kärntens?. A checklist and Red List was printed in the year 1999 by W. Rabitsch, C. Dietrich and F. Glaser.In the course of this thesis, published literature was challenged in the light of present day knowledge. The evaluated data consist of bibliographical references and recently collected material. 4411 records were evaluated. The checklist now includes 92 ant species known from Carinthia. 22 species (24 %) are living as social parasites and are dependent on other ant species.Specifications of the ant fauna of Carinthia are presented: They include the number of records mentioned in the literature, descriptions of vertical and horizontal distribution, biology, records of myrmecophilous arthropod species, habitat selection and threat status in Carinthia. Most of the Carinthian ant species are distributed throughout Austria, exceptions to this rule are Temnothorax sordidulus und Formica cinerea, which are absent in eastern Austria. The limiting factor of the presence of single species in habitats is often the competition with related species.The threat status for all Carinthian ant species was classified: 9 % are critically endangered, 13 % are endangered, 11 % are vulnerable, 11 % are near threatened, 12 % are not evaluated because the data are deficient, 3 % are not evaluated because (probably) they are not autochthonous. The most important reasons are the riverine regulation, leading to the loss of ?Heißlände? areas, and the decrease of xerothermous openland in lower altitudes. Ants are appropriate bioindicators and should be used for environmental impact assessments more frequently.