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Osteoid osteoma is benign bone tumor, in which talus bone involvement is rare. This case was a 17 year old man with a right ankle pain and reduced range of motion since one year ago. Following clinical evaluation and radiological studies (X-ray, CT scan, and MRI), a bone tumor was detected in the talus with a possible diagnosis of Osteoid osteoma. The patient was operated with ankle anterior approach and the tumor was resected from the site. The patient was discharged after two days. The patient's pain was eliminated after surgery. Ankle movements are back after two months. Due to the rare nature of the disease and clinical diagnostic problems and its unusual radiographic manifestations, osteoid osteoma in chronic ankle pain in young patients, is included in the list of differential diagnosis.