Objective To assess the impact of tobacco cessation curriculum on the professional competency of dental students in providing effective TCC, ii) To determine the intention of dental students in providing TCC and whether this intention can be explained by TPB. To identify barriers in providing effective TCC Methods An Analytical cross-sectional study was conducted from March 2023 to August 2023. Using a consecutive sampling technique data of 300 was gathered. Students from clinical years of BDS i.e. (third year and fourth year), dental interns, and postgraduate students from all Public and Private dental colleges in Karachi who had tobacco cessation curricula in formal dental teaching. A structured, self-administered questionnaire was used as a data collection tool which served the purpose of studying intentions and perceived barriers in tobacco cessation counseling (TCC) using constructs of the theory of Planned Behaviour Results The majority of participants demonstrated high intention to deliver Tobacco cessation counseling and certainly reported that it is their responsibility as dental health care providers to educate and aid the consumers in quitting. There was no significant difference observed in the intention of dental students and dentists to provide effective TCC. Statistically significant differences were observed between the barriers faced by dental students and dentists in terms that the students were more concerned that they lack skills of TCC in comparison to dentists; they were also hesitant as they thought it might impact the dentist-patient relationship. Conclusion: This study provides useful insights into the importance of TCC in oral healthcare and the willingness of dental professionals to incorporate it into clinical practice. It also highlights the positive impact of the tobacco cessation curriculum in effective TCC.