The current study presents data on 11 ant species recorded for the first time in Bulgaria (Messor hellenius Agosti & Collingwood, 1987, M. mcarthuri Steiner et al., 2018, Crematogaster ionia Forel, 1911, Monomorium monomorium Bolton, 1987, Temnothorax aeolius (Forel, 1911), T. cf. exilis (form darii Forel, 1911), T. finzii (Menozzi, 1925), T. rogeri Emery, 1869, Tetramorium cf. punicum, Plagiolepis xene Stärcke, 1936 and Lasius reginae Faber, 1967, as well as new locality data on 15 rarely found species. Six of the species have so far been known only from a single locality in Bulgaria. The dataset of all records presented in this work was published separately through Global Biodiversity Information Facility (GBIF).