New data on the occurrence of 6 species of the Heteroceridae in Poland are presented. Heterocerus fenestratus is newly reported from Kraków-Wieluń Upland, Małopolska Upland, and Bieszczady Mts. H. fusculus is reported for the first time from Eastern Sudety Mts., Bieszczady Mts., and Tatra Mts. H. marginatus is new to Baltic Coast, Podlasie, Lublin Upland, and Western Beskidy Mts. Littorimus hispidulus is new to Mazovian Lowland and Małopolska Upland.