Infections due to intestinal parasites are among the most prevalent infections in humans in developing countries. Faecal occult blood refers to blood in the faeces that is not visible to the naked eye and FOBT, as the name implies, is aimed to detect subtle blood loss in the gastrointestinal tract from the mouth to the colon .This study aimed to prove if there is a relation between FOB and intestinal parasites. Stool samples of 450 patients attending different out patient clinics in Ahmed Maher Teaching hospital, Egypt.