Background: The distalization of maxillary molars is frequently required in class II non-extraction patients. Hence; the present study was undertaken for assessing and comparing the efficacy of Greenfield molar distalizing appliance with the distal jet in patients with class II malocclusion. Materials & methods: A total of 20 patients were enrolled in the present study. Complete demographic and clinical details of all the patients were obtained. Cephalometric analysis was done in all the patients. Pre-treatment localisation of maxillary molars was done cephalograms. All the patients were divided into two study groups with 10 patients in each group. Group 1 included patients who were treated with Greenfield molar distalization appliance while Group 2 included patients who were treated with distal jet. Post-treatment, cephalometric analysis was again done for assessing the molar transition and distal tipping of molars. Results: Mean post-treatment molar transition among the patients of group 1 and group 2 was 3.87 mm and 3.44 mm respectively. Significant results were obtained while comparing the mean post-treatment molar transition among patients of group 1 and group 2 respectively. Mean distal tipping of molars among the patients of group 1 and group 2 was 6.22° and 3.92° respectively. Significant results were obtained while comparing the mean Distal tipping among patients of group 1 and group 2 respectively. Conclusion:Greenfield molar distalizing appliance is better in comparison to distal jet in class II patients. Key words: Distalization, Greenfield, Molar