The paper is the third contribution in the series devoted to the spider species new to the fauna of Iran. The family Miturgidae, seven genera (Agelescape, Dictyna, Firmicus, Paracedicus, Poecilochroa, Prochora, Sidydrassus) and 30 species are recorded from Iran for the first time. The hitherto doubtful Iranian record of Benoitia lepida (O. Pickard-Cambridge, 1876) (Agelenidae) is confirmed by the specimens newly collected from Khorasan-e Razavi Prov. A map of localities is provided and 15 species are illustrated by digital photos.