Epidermoid cysts of the floor of the mouth are rare lesions thought to be caused by entrapment of epithelial remnants during embryonic fusion. We present the case of large epidermoid cyst with an oral and a submental component in a 71-year-old male who presented with complaints of a mass in the oral cavity and difficulty in chewing and swallowing solid foods for about 2 years. C.T. Scan shows a 110x55x70mm well-circumscribed cystic mass extending from the sublingual area to the mylohyoid muscle. Extra oral approach was used as the tumor was bulky, whole cyst was removed in toto. We are presenting this case because of the giant size of the cyst and the dilemma in surgical approach to the cyst.