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Aneurysmal bone cyst (ABC) is a locally aggressive nonneoplastic tumor-like lesion commonly involving metaphysis of long tubular bones. Primary ABC in the talus is extremely rare and of unknown etiology. Until now, only about thirty cases have been reported in the literature. We report a case of primary ABC of the talus in a 20-year-old male patient who was treated by intralesional curettage and cancellous iliac crest bone grafting. The patient showed excellent functional outcome.