Background: The Facial anthropometrics have wide implications in determining the age, sex for identification in forensics and cosmetic pre-surgical assessments. The studies on comparisons of face indices with north and south Indian population were cited routinely but not within the south Indian population. Thus, the current study had attempted to characterise facial anthropometrics and correlate with sexual dimorphism. Aims/Objectives: To characterise the facial anthropometrics and correlate with sexual dimorphism in south Indian population. Methodology: An observational study was conducted on 200 subjects, recruited by convenient sampling after meeting the inclusion and exclusion criteria. The “Facial index”(FI) was calculated after measurement of face height (FH), Upper face height(UFH), Lower face height (LFH), Face width (FW)using digital vernier calliper. The facial anthropometrics and face types were evaluated for differences in male and females. The state of origin from south India was also evaluated for similar significant implications. The t-test and ANOVA or chi-square tests were used for statistical analysis as needed. Results: The study population of 200 subjects, 45%(n= 90) were males and 55% (n=110) were females. The FH (p<0.0001), FI (p<0.0001) and LFH (p<0.0001) were significantly different in males and females. The majority of the participants i.e 51.3% (n= 102) were hyperleptoprosopic followed by 19% (n=38) of leptoprosopic and mesoprosopic variants. There is a statistically significant difference (p<0.0001) between both genders, upper facial height (p<0.0001) and lower facial height (p<0.004) considering the face type. Conclusion: The facial anthropometrics and face form had significantly correlated with sexual dimorphism in the study. The FH, FI and LFH along with facial form can be used as reference for future studies in south Indian adult population in age range of 18-25 years. © 2021 Elsevier B.V., All rights reserved.