Endometriosis is the abnormal existence of functional uterine mucosal tissue outside the uterus. It is a usual disorder of women in reproductive age, which is mainly located in the female genital tract. We report the cases of two women with endometriosis of the abdominal wall; the first one in the rectus abdominis muscle and the second one in the surgical scar of previous caesarian incision. The diagnosis was made by the histopathological analysis of the surgical specimens.