Odontoameloblastoma (OA) is an extremely rare mixed odontogenic tumor with odontogenic mesenchyme displaying the histologic characteristics of ameloblastic fibroma and complex odontoma. OA occurs predominantly in children and young adults. The majority of the tumours are associated with unerupted teeth. OA is generally asymptomatic and occurs in either jaws with slight inclination for mandible. Review of the literature exhibits only four reported cases in the posterior maxilla. This report presents an OA in the posterior region of the maxilla of an 11-yearold female. The lesion was surgically treated, no recurrence has been observed on follow-up.