Aim of the study: To evaluate the influence of age on the levels of ala tragal line concerning the occlusal plane in south Indian population. Materials and Method: In this cross-sectional study, a total of 100 Subjects were divided into two groups with each group having 50 subjects (25 male __ampersandsignamp; 25 Female) based on their age, Group A 20 to 35 years and Group B 36 to 50 years of age with angles class I malocclusion. The radio-opaque markers (lead balls) were then placed about superior tragus, middle tragus, inferior tragus and ala of the nose. Following this, a lateral cephalogram was made and the corresponding angles, from ala (A) to the superior margin of the tragus (ST), ala (A) to the middle margin of the tragus (MT), From ala (A) to the inferior margin of the tragus (IT) were measured using Facad software and the results were statistically analysed. Results: The results of the study showed that the mean angle of IT (group A __ampersandsignndash; 2.990; group B __ampersandsignndash; 3.240) the line from the ala of the nose to the tragus of the ear was found to be the lowest in both the groups and was almost parallel to the occlusal plane in both the groups. On Statistical analysis, the mean difference was found to be almost similar in both the groups and there was no statistically significant difference between the two groups P__ampersandsigngt;0.05. Conclusion: The line running from the ala of the nose to the inferior part of the tragus of the ear is more parallel to the occlusal plane in south Indian population irrespective of the age group.