Endometriosis is a well known gynaecological condition associated with infertility and chronic pelvic pain. Review of literature shows that endometriosis can affect any tissue in the body, including the appendix. Here we report a case of pelvic endometriosis involving the vermiform appendix in a 45 years old multiparous woman. When women of the reproductive age present with recurrent lower abdominal pain on the right side, endometriosis of the appendix should also be considered. At the time of surgery appendix should be inspected and removed; especially in the presence of pelvic endometriosis.