New distributional records on 55 ichneumonids (Hymenoptera, Ichneumonidae) from Italy are provided. Of these, 47 species are new for Italy, including representatives of the subfamily Diacritinae and of the tribes Zimmeriini (Ichneumoninae) and Pseudorhyssini (Poemeniinae); six species are new for Sardinia, one for Sicily and one for the Italian mainland. The hitherto unknown female of Baranisobashibericus Heinrich, 1972 (Ichneumoninae) is described.
Keywords: Ichneumonidae; Italian mainland; Italy; Sardinia; Sicily; checklist; new records.