The present paper reports 37 species of mites under 3 orders, 18 families and 26 genera occurring on edible mushrooms viz. Milk mushroom (Calocybe indica) and Oyster mushroom (Pleurotus ostreatus) from some parts of South Bengal. This includes species like Caloglyphus berlesi, Glycyphagus bicaudatus, Tydeus collyerae, Resinacarus resinatus, Antennoseius indicus, Veiga uncata and Lasioseius quadrisetosus and genera like Tydeus, Lorrya, Raphignathus, Pyemotes, Neognathus, Crassicheles, Veiga, Rhodacarus, Typhlodromous, Resinacarus, Polyaspis, Trematula, Gamasellodes which are being reported here for the first time on mushroom. This report also includes 3 species of the family Phytoseiidae belonging to genus Typhlodromous and 1 species of family Cunaxidae belonging to genus Neocunaxoides which appear to be new to science. Apart from these, the occurrence of Tydeus collyerae and Resinacarus resinatus were not earlier reported from India.