Aim: To identify the prevalence and types of stressors in undergraduate dental students in various dental colleges in Chennai, India, during the various years of study. Design: Cross-sectional multicentre study was conducted using a self-administered questionnaire Materials and Methods: A cross-sectional study was conducted using a self-administered questionnaire among B.D.S. students from their 1st year of study to CRRI (Internship). The study was conducted during the last term of the year and the students answered for their current year of study. A total of 3,176 students from 7 different colleges participated in the study. Statistical Analysis Used: percentage of students under each category was calculated Results: major stressors in first year students – learning new subjects and environment Major Stressors in second year students – work and lack of time Major Stressors in final year students – physical exertion and patient work Conclusion: This study shows that the dental school environment has variable stressors. Of the 5 years of study, the students seem to be more stressed in the 2nd and 4th year of study.