OBJECTIVE: To evaluate the mediating role of social support in relationship between cognitive functioning and positive mental health among middle aged adults. STUDY DESIGN: Correlational Design PLACE AND DURATION OF THE STUDY: Data were collected from February, 2018 to May, 2018 from different universities. SUBJECTS AND METHODS: 200 participants were selected through purposive sampling from district Faisalabad with age range of 35 to 55 years. Information was gathered through Montreal Cognitive Assessment, Positive Mental Health Scale and Multidimensional Perceived Social Support. RESULTS: Results of bivariate correlation revealed significant positive correlation between cognitive functioning and positive mental health among middle aged adults. While social support played positive mediating role between cognitive functioning and positive mental health. In gender differences results confirmed the significant difference in terms of cognitive functioning, social support and positive mental health were found. CONCLUSION: Perceived social support among middle age adults is linked with positive mental health and cognitive functioning.