Aim Cleft lip and palate (CL/P) is one of the most prevalent craniofacial congenital anomalies. This study aims to assess the knowledge and awareness of cleft lip and palate management among the adult population in Chennai. Materials and Methods A cross-sectional study was conducted using a 8- item questionnaire, administered through both online and offline methods, targeting various segments of the population in Chennai. Results A total of 317 participants completed the questionnaire. The knowledge rate regarding cleft lip and palate was notably higher among females, at 21.62%. Overall, only 19.24% of the sample was aware of the condition, with the majority of those informed primarily obtaining their knowledge from television. Just 2.21% of participants knew that the condition can be diagnosed before birth, and 3.15% were aware that individuals with clefts should seek medical assistance. Conclusion The knowledge and awareness of cleft lip and palate (CL/P) among participants is minimal. To enhance awareness in the general population, informative seminars should be organized, and professional associations should ensure that reliable information is made available online.