Benign osteoblastoma is a rare lesion of bone, usually confined to the long bones and the vertebrae. There have been 16 cases reported in the calvarium and only four in the frontal bone. We treated a patient with benign osteoblastoma of the frontal bone (supraorbital ridge and roof of orbit), and we review the literature. The histologic and radiologic characteristics are described and the treatment modalities are reviewed.