345 species of Tachinidae (76% of those known from Poland), were recorded from the Świętokrzyski Region. Most of them are widely distributed parasitoids of lepidopterans, hymeno- pterans, beetles and bugs. 32 of the species in this group are new to the region studied and Unnaemyia lithosiophaga. Chrysocosmius auratus, Siphona rossica, Oswaldta eggeri Paratryphera barbatula, Carcelina stackelbergi. Platymyia anlennala, Myxexoristops abietis, Allophorocera pachy- styla, Zewaa subapennina, Eriolhiix micmnyx and Ramonda delfinensis are new to the fauna of Poland. The Tachinid fauna of the Świętokrzyski Region was compared to that of other regions in Poland. An analysis of the species composition and dominance structure was carried out in selected habitats in the Pieniny Mts., the Świętokrzyski Region and the Mazovian Lowland.