The species of Perilampidae (Hymenoptera: Chalcidoidea) known to occur in Minnesota are reviewed. Prior to this work, occurrences of only three species have been reported in the literature. Museum searches have yielded eight additional species collected from Minnesota and these are recorded here. A first collection record of Steffanolampus salicetum (Steffan) for Minnesota by the senior author is also included. A total of twelve species in three genera are known to occur in Minnesota. Associates and biology of all species occurring in Minnesota are summarized, collection data are summarized, and collection locations are mapped. A key to the Minnesota species is included.