Background: Adenoid cystic carcinoma (ACC) is found in approximately 10% of all salivary gland tumors. It is the most common malignant tumor of sub-mandibular salivary gland and also of minor salivary glands. Palate is the most common location, that too mostly in the area of the greater palatine foramen. One of the features of ACC is its slow growth rate & thus it is often present in the patient’s mouth for several years before manifesting with symptoms. A 32 year old man reported with a swelling on the right side of palate since one and a half years which was diagnosed histopathologically as ACC. A detailed description of the case along with review of literature is presented here with emphasis to focus on the importance of detailed investigations, histo-pathological evaluation and post-operative rehabilitation as in the present case.