The Osteoid Osteoma (OO) is a benign tumor of bones. According to the literature there is predominance of mandible over maxilla in most of the cases so far reported. The radiographic features present a pathognomic feature i.e., central nidus surrounded by a peripheral zone of sclerotic bone. In the cases of large Osteoid Osteomas surgical resection is generally a preferred mode of the treatment. However, recommended a regular clinical and radiographic follow up for small lesions to be diagnosed earlier. Here we report a rare case of Osteoid Osteoma that represented in the mandible of 17yr old boy.