Eleven Polychaetes species, having a place with nine families, are accounted for in the current investigation. Six received: species out of eleven were alien species, and four were accounted for as Lessepsian migrant species. In the current examination,  Branchiomma bairdi (McIntosh, 1885) was recorded just because of the Suez Canal and Port Said. Thus, this species is considered Lessepsian migrant species. Four species were recently detailed as Lessepsian species: Sigambra parva (Day, 1963); Ceratonereis mirabilis Kinberg, 1865; Armandia intermedia Fauvel, 1902; and Exogone simplex Hartmann-Schröder, 1960. Distribution of the Egyptian polychaetes is scant, subsequently, this investigation is viewed as an endeavor to find more types of alien polychaetes, which may have been available in the Egyptian waters for quite a while and have not yet been recognized. Likewise, this examination demonstrates that the polychaetes in the Egyptian waters have been inadequately explored and along these lines, the polychaete diversity in Egypt is still underestimated.