Abstract: The occurrence and distribution of four species of the Endogonaceae in Poland are described and illustrated. Entrophospora infrequens (Hall) Ames & Schn., Glomus caledonium (Nicol. & Gerd) Trappe & Gerd., and Scutellospora pellucida (Nicol. & Schenck) Walker & Sanders probably occur in the whole of Poland, but in low frequencies, and Acaulospora bireticulata Rothw. & Trappe seems to be a very rare species, having been found in only 2 of the 141 soil samples studied. G. caledonium is new to Poland and the other species were found for the first time in Europe.