Abstract: The main aim of this research is to determine the impact of corporate social responsibility (CSR) on customers satisfaction and brand loyalty in Telecom companies of Pakistan in formation of purchase intention of customers. Data from 150 respondents were collected through questionnaire from all over Karachi. Data analysis was performed through chi square. The findings of this study showed that CSR have significant relationship with customers satisfaction and brand loyalty. Moreover, it is concluded that there is also positive relation between brand loyalty and purchase intention. This study concludes that by improving ethical CSR customers satisfaction can also improve which can retain customer to be loyal to the brand. This study concluded that any industry which want make organization-consumer bond stronger should focus on CSR.