Frozen shoulder is a common condition with pain, stiffness and limited motion of the shoulder joint, resulting from the fibrosis and contracture of the glenohumeral joint capsule. Physical therapy treatment may include various manual mobilization techniques to regain extensibility of the shoulder capsule and in relieving pain and increase a range of motion. Purpose: The purpose of the study was to compare and find out the effectiveness of Mulligan’s technique and Spencer’s technique individually when compared with conventional therapy in patients with frozen shoulder. Methods: 90 patients were selected randomly with frozen shoulder. The study included 3 groups, the control group received Conventional therapy, mulligan’s group received mulligan’s technique MWM and conventional therapy, and spencer’s group received Spencer’s technique and conventional therapy. The period of intervention was 3 sessions per week for 6 weeks. The outcome measures included NPRS, goniometry, and SPADI. ANOVA was done for intergroup analysis, post hoc test was done for between group analysis and paired T-test was done for intragroup analysis. Result: There was no significant difference in outcome measures of all the three groups at day 1. All the three groups showed a significant difference (p-value 0.000 < 0.05) at 3 and 6 weeks in NPRS, shoulder ROM, and SPADI. The mean difference and paired T-test values of mulligan’s group was more when compared to control group and spencer’s group at the end of 6 weeks Conclusion: In this study, we found significant improvement statistically in all the outcome measures in control group, mulligan’s group and spencer’s group at 6 weeks of intervention. However, the functional improvement in mulligan’s group was better than the control group and spencer group. KEYWORDS: Frozen shoulder, MWM, Mulligan&#039's technique, Spencer’s technique