Introduction: The spee curve was measured from the most distal section of the second molar to the incisal edge in this study. When the incisors are included in the interpolation, the curve becomes broader, flatter, and more variable. Aim: To analyse the relationship between the curve of spee and various skeletodental parameters in different malocclusion groups. Method: 120 untreated patients__ampersandsignrsquo; lateral cephalograms, study models, and frontal pictures were included in the study, and they were divided into five malocclusion groups. The research models were used to quantify COS depth, overjet, overbite, and arch depth. On frontal photographs, the facial index was calculated, while lateral cephalograms were used to examine other skeletaldental parameters (mandibular anterior dental height, mandibular posterior dental height, IMPA, mandibular plane angle, J-ratio, lower facial height, UFH/LFH, mandibular body length, and ramus height). Results: The COS depth was greatest in class II division 2 group and lowest in the class III malocclusion group. COS depth and overjet had a statistically significant positive link in class I, class II division 1, and class II subdivision, whereas COS depth and overbite had a statistically significant positive association in class II division 2 and class III. Conclusion: Overjet and IMPA were major contributors to the increasing curve of Spee in class II division 1, class I, whereas overbite and facial index were major contributors to the curve of Spee in class II division 2.