The purpose of the present study is to determine the contact area variations in primary molars among three to five year aged preschool children. Materials and Method: The sample for this study consisted of 75 children of age group 3-5 years whose impression were taken casts were poured and die models were made to assess the types of contact areas between primary molars as seen from the occlusal view. The contacts were scored using OXIS classification. Data was statistically analysed. Results: Among the different types of contacts, the most common contact in maxilla was observed as I (41%), followed by O (29%) ,X (28%) and S (3%). In the mandible, the most common contact type was I (47%), followed by X (29%), O (16%) and S (9%) when the total prevalence of maxillary and mandibular arch was compared there was no statistically significant difference observed. Conclusion: In the present study four different types of interproximal contact areas were observed as per OXIS classification that is O type of contact, X type of contact, I type of contact and S type of contact in three to five year aged preschool children.