Osteosarcoma is a malignant mesenchymal tumor whose cancerous cells produce osteoid matrix. It is the common primary malignant bone tumor, but only 4-7% of the osteosarcomas occur in the jaws. Considerable histopathologic variability was seen in the jaw osteosarcoma. Here a case of chondroblastic osteosarcoma of jaw with their clinical, radiographic and histological findings is presented.