ABSTRACT: Regarding oral mucosa, oral ulcers are common complaints of patients. Ulcers refers to damage of epithelium and connective tissue or both. Most common cases are due to physical trauma, infective diseases immune related and neoplastic. A detailed history of patient is mandatory in assessing oral ulcerative lesions. Clinical presentation varies depending upon drugs involved, trauma. Diagnosis of oral ulcerative lesions are challenging. Additional diagnosis is required in patients not responding to treatment. Histopathological examination is required in case of definite clinical verification purpose. The aim of this article is to briefly explain about nonneoplastic oral ulcers.