Aneurysmal bone cyst (ABC) is a benign solitary bone lesion of unknown etiology. ABCs mainly occur in the long bones but only rarely in the bones of the feet. Few cases of ABC involving the calcaneum have been reported.We report an unusual case of ABC in calcaneum in a 23 year old male, as only 1% of this type of tumour is found in the calcaneum. This article discusses the etiology, clinical presentation, radiological features, histological features and preferred examinations of aneurysmal bone cysts.