Aim and Objectives- This survey was aimed to assess the awareness among interns, postgraduates and faculties of a dental college in Moradabad (U.P) on the basis of knowledge, diagnosis & treatment through a survey questionnaire concerning Obstructive sleep apnea Materials and Method- A self-administered questionnaire, composed of 20 questions wasdesigned out of which 9 questions were knowledge based and 11 were diagnosis & treatment based. The study population comprises of 140 randomly selected participants-Interns (44), Postgraduates (48) and Faculties (48).We compared the interns, postgraduates and facultiesdata with the data collected by using Chi-square test and frequency distribution test. Result- Questionnaire were specified to 140 respondents through which data was collected and statistically analysed. The result which was revealed on the basis of knowledge that the mean knowledge for Interns-8.33%, Postgraduates-13.19% and Faculties- 30.12% and on to basis of diagnosis and treatment planning Interns-0%, Postgraduates-10.07% and Faculties-30.21%. The awareness was least among all the categories concerning Obstructive Sleep Apnea. Conclusion- Educational interventions concerning OSA in medical and dental schools should help us to improve their abilities in diagnosing and treating OSA. We must recommend a greater number of hour for dental students exposure to sleep education.