Introduction: A chondroblastoma is a benign and rare tumor, usually found in the epiphyseal region of the long bones. It is found less frequently in membranous bones. Chondroblastoma was first described as calcified giant cell tumour by Ewing. Most commonly it found in the epiphyses of long bones; particularly from the epiphyses of the proximal and distal parts of the femur, the proximal part of the humerus, and the proximal part of the tibia. Other reported sites are talus, scapula , patella, pelvis, distal radius, distal tibia , ribs, proximal fibula, calcaneum. We here report a rare case of a chondroblastoma of lateral malleolus. Conclusion: It appears that till date no case has been reported of chondroblastoma occuring in lateral malleolus world wide in the literature. Based on unique presentation of this case we reported this rare case of chondroblastoma of lateral malleolus.