A total of 29 species and 4 varieties of slime molds have been recorded from various edible mushroom cultivation sites in Taiwan. Among them, 14 species and 2 varieties were previously not reported to be associated with cultivated mushrooms around the world. Fuligo septica var. flava Persoon is recorded for the first time in Taiwan, which is characterized by the presence of yellow inclusions in peridium, capillitium, as well as pseudocapillitium. The biological and ecological significances of slime molds-cultivated mushrooms association are briefly discussed.