This is the first checklist of Heteroptera of Montenegro, including 517 species. The short historical review includes names of the most important collectors and heteropterologists who have studied the Heteroptera fauna of Montenegro. The list was compiled from data published in numerous monographs and individual papers, as well as from specimens stored in museum collections. The list also includes 20 species previously unpublished for the territory of Montenegro: Corixa dentipes Thomson, Saldula c-album (Fieber), Bryocoris pteridis (Fallén), Dichrooscytus intermedius Reuter, Dionconotus neglectus neglectus (Fabricius), Phytocoris populi (Linnaeus), Halticus apterus apterus (Linnaeus), Europiella alpina (Reuter), Heterocordylus genistae (Scopoli), Heterocordylus (Heterodactylus) tumidicornis (Herrich-Schaeffer), Temnostethus (Temnostethus) pusillus (Herrich-Scheffer), Xylocoris (Xylocoris) cursitans (Fallén), Nysius ericae ericae (Schilling), Brachyplax tenuis (Mulsant & Rey), Dryoderes umbraculatus (Fabricius), Odontoscelis minuta Jakovlev, 1881, Eurygaster austriaca (Schrank), Eurygaster dilaticollis Dohrn, Coptosoma scutellatum (Geoffroy) and Zicrona coerulea (Linnaeus).