244 specimens of Periplaneta americana Linnaeus from 13 localities of Ica were studied. Nematodes and protozoa were identified. They are Lophomonas blattarum, Leptomonas sp., Leidynema appendiculatum and Hammerschmidtiella diesingi. Also, parasites of man were found, three of which are pathogenic: Giardia lamblia, Blastocystis hominis and Cryptosporidium sp.Se estudiaron 244 especímenes de Periplaneta americana Linnaeus procedentes del alcantarillado de 13 zonas de la ciudad de Ica. Se identificaron 2 protozoarios y 2 nemátodes propios de la fauna parasitaria de la “cucaracha doméstica”: Lophomonas blattarum, Leptomonas sp., Leidynema appendiculatum y Hammerschmidtiella diesingi y protozoarios que parasitan al hombre, de los cuales 3 especies son patógenas: Giardia lamblia, Blastocystis hominis y Cryptosporidium sp.