Juvenile Aggressive Cemento-Ossifying Fibroma is a benign, fibro osseous neoplasm commonly affected maxilla but also other bones including mandible, arising in children. It is considered to be a locally aggressive and quickly expansile lesion. Because of its aggressive nature and high recurrence rate, an early detection and a complete surgical excision is essential. A case of Juvenile Aggressive Cemento-Ossifying Fibroma in a 9 year old male child who visited the Department of Oral Medicine and Radiology, J.S.S. Dental college and Hospital, Mysore is being reported and discussed.