The first description of osteoid osteoma was given by Jaffe in 1935. Pathogenesis of osteoid osteoma varies from uncontrolled growth to inflammatory reaction to abnormal healing. It consists of osteoid and trabeculae of new bone deposited in the basement of highly vascularized osteogenic connective tissue. It is a slow‑growing lesion. The lesion usually do not grow more 2 cm in size and prevalent in young adults. Here, we present a case where osteoid osteoma is located on the mandibular condyle, with size more than 2 cm which is unlike osteoid osteoma and is a rarity.