Allocreadium bynni sp.n. was collected from the ileum of the fresh-water fish Barbus bynni captured from the River Nile of Assiut. The new species was described, drawn and compared with other related species of Allocreadium. Different morphological features were studied. Vitellaria extending to the ovary, oesophogus short, testes oblique, absence of intertesticular space, the ovary is seprated from the anterior testis by a space and the caeca not reaching to the posterior end are constant features and can be safely used in separation of the present species from different Allocreadium parasites.