This dataset supports the systematic review and meta-analysis titled "Identifying the Key Components of Social Support for Patients Living with Type 2 Diabetes." It includes a data characteristics table (Study ID, population details, intervention context, sample size, age, gender, follow-up, and HbA1c outcomes), quality assessments using MMAT and JBI tools, and relevant figures. The dataset ensures transparency, enables replication, and supports further research on social support interventions in Type 2 diabetes management.