Giant cell tumors of the skull are very rare. They seldom involve the skull and more often tend to involve the temporal and sphenoid bone. We present here the case of a 25 year-old female with giant cell tumor of the occipital bone who visited the hospital with headache and posterior neck pain. Magnetic resonance(MR) imaging revealed a well defined extra-axial mass of 3×3cm in the posterior fossa with changes of the overlying calvarium. The lesion showed isosignal intensity on the T2 weighted image and homogeneous strong enhancement on the T1 enhanced image. The patient underwent total resection of the lesion and giant cell tumor was made as a final diagnosis. A brief review of the literature is also presented.