Umbilical endometriosis, also called Villar’s nodule, has rarely been described in the literature. It represents only 0.5% to 1% of all cases of endometriosis. We report a case in a 28-year-old nulligest, nulliparous woman who consulted at the CSREF CII in Bamako. The diagnosis was suspected with the presence of umbilical swelling with cyclic, painful, dark hemorrhage of firm consistency. We performed an omphalectomy with an uncomplicated postoperative course. She was released from the hospital three days post-surgery. Anatomo-pathological examination of the resected specimen confirmed the diagnosis of umbilical endometriosis.