Orthokeratinized Odontogenic Cyst (OOC) is an uncommon developmental odontogenic cyst which exhibits peculiar clinical and pathological aspects in comparison with other developmental odontogenic cysts like Dentigerous cyst and Odontogenic keratocyst. The diagnosis of OOC is important as the pathologic behaviour, clinical outcome and the surgical management of OOC is disparate. The purpose of the article is to present a case of OOC radiographically mimicking Dentigerous cyst in a 20 year old male.