Solitary fibrous tumours are spindle cell neoplasms that usually occur in the pleura and peritoneum and rarely involve the oral cavity. We report a clinical case of a 43-years old male patient with a solitary fibrous tumour in the right buccal mucosa. These tumours exhibit widely different behaviour and the confirmation of diagnosis depends on immunohistochemical results. The lesion was excised and did not recur after a follow-up period of fourteen months.