Objectives: The objective of this presentation is to highlighten this lesion from other Odontogenictumors ,an accurate clinical, radiographical and histopathological evaluation is mandatory to seperate it from other fibrous lesions.In addition, we discuss relevant issues about the origin, diagnosis and management of the present lesion. Methods: The clinical data is of a single case of , Libyan female patient of 29 years, moderately healthy, reported with pain and swelling over the Rt side of the jaw , gradually increasing in size causing mild facial discrepancy , since many months. Routine clinical and radiographic examination was carried out, showed a unilocular radiolucency involving the right molar areas extending in to the ramus considerably up to the root of the coronoid process on the right side. There was a clear evidence of reactive sclerotic margin all around. A biopsy was performed and histologically confirmed as Odontogenic fibroma. Wide enculeation and curettage was performed , the resultant bony cavity is closed at the mucosal level without the need for drains or packing and the post operative period was uneventful. She has been periodically assed for any discomfort and recurrence. Results: Odontogenic fibroma is a rarely reported lesion of mesodermal origin. Current opinion regards the tumor as a distinct entity with clinical and histological patterns that separate it from the ameloblastic fibroma, odontogenic myxoma, and hyperplastic dental follicle. There are some authors propose a criteria of Diagnosis and Classification of Odontogenic fibroma. Conclusions: It is essential that oral and maxillofacial surgeons, radiologists and pathologists integrate all relevant and available information to come up with a correct diagnosis and appropriate disease management. The odontogenic fibroma is a rare, benign tumor of mesodermal origin, and one of the least understood of all odontogenic neoplasms. The lesion occurs most commonly in the mandible although several cases have been reported in the maxilla.