The maximum gluteal muscle is a wide and thick muscular band that forms the buttock prominence. The insertion-origin anatomic variations of the maximum gluteal muscle are uncommon. The gluteal musculature may receive extra fascicles originated from the lumbar aponeurosis, as well as from the ischiatic tuberosity. Some distinct muscular fascicles, known as the coccyx-femoral muscular portion, may sometimes be found close to the free lower margin of the muscle. In the present work, we reported the morphometric study of the coccyx-femoral muscular portion (band) of the maximum gluteal muscle unilaterally present in a male cadaver from the anatomy laboratory - University of Brasilia Medical School.