Ameloblastic carcinoma (AC) is a rare epithelial odontogenic tumor of the jaws, which exhibits cytological features of ameloblastoma and carcinoma. It has a distinct predilection for mandible. These lesions may initially show histologic features of ameloblastoma that dedifferentiate over time. Others may present with features of epithelial dedifferentiation in ameloblastoma. A case of ameloblastomic carcinoma in a 64-year-old male is reported, who presented with swelling in the left mandible 3 months after the extraction of the left upper molar.