We assessed perceived satisfaction of patients and related factors for treatment provided by the oral surgery student dental clinic of the only Sri Lankan dental school. A descriptive cross-sectional study was conducted among 288 consenting patients who received oral surgery treatment at the student dental clinic of Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, University of Peradeniya, Sri Lanka. A self-administered, validated questionnaire and a 19-item multidimensional patient satisfaction scale were used for data collection. Patients of all ages were represented, but were dominated by females, aged 30 to 44 years, possessing educational attainment up to General Certificate of Education ordinary or advanced level of which 54.9% were unemployed. They had travelled distances of less than 10 and 10 to 20 km (28.1% and 27.5%, respectively) predominantly to receive tooth extractions exacerbated by symptoms. Overall, 90% of responding patients were highly satisfied with the items of many dimensions of dental treatment. Despite high levels of perceived satisfaction expressed, further improvements were warranted for waiting time, optimal pain control with more kind, and courteous staff.