Abstract :
Three species of protozoa: Entamoeba coli, Entamoeba histolytica and Iodamoeba sp. and nematode eggs belong to four species: Ascaris lumbrecoides, Ascaridia sp, Strongyloides sp and Habronema sp. were reported in this study for the first time in Iraq, that transmitted mechanically by Musca demostica. Three species of protozoa were showed from tested of 170 Musca demostica fly after stained with Zeal Nelson: Cryptosporidium parvum, Cryptosporidium muris, Cyclospora cayetanensis, after appearance of their oocysts. The results were discussed with ratios of prevalence of these parasites in Baghdad.