Chondroblastoma is a very rare bone tumor of cartilaginous origin. Talar involvement is very rare with a few number of reports. We present an unusual case of chondroblastoma localized in talus. The patient was admitted with ankle pain worsens with motion. Radiological evaluation showed a lesion with sclerotic margins, that destructed the lateral cortex of the talus. The lesion was treated with extraarticular curretage and autogenous bone grafting. At the end of the 70 months follow-up, the patient had no complaints and clinical or radiological findings about local recurrence or metastases.