A list of 81 species of the true bugs belonging to the families Pyrrhocoridae (2 species), Stenocephalidae (2 species), Rhopalidae (13 species), Alydidae (4 species), Coreidae (8 species), Cydnidae (5 species), Scutelleridae (3 species), and Pentatomidae (44 species) from Khuzestan and the adjacent provinces in southern Iran is published. Two new species, Sciocoris farsianus sp. nov. and S. kmenti sp. nov. (Pentatomidae), are described. Presence of two species in Iran is confirmed: Rhopalus rufus Schilling, 1829 (Rhopalidae) and Bagrada amoenula (Walker, 1870) (Pentatomidae).