Purpose of this study is to explore the effect of social media on the successful implementation of customer relationship management: an empirical study in Carrefour chain stores in Erbil Province-Iraq. Current years have witnessed the rise of new media channels such as Facebook, YouTube, Google, and Twitter, which allow customers to take a more active role as market players and reach almost everyone anywhere and anytime. These new media threaten long established business models and corporate strategies, but also provide plenty opportunities for growth through new adaptive strategies. Social media marketing is a powerful tool for businesses to reach, connect and build strong relationships with their customers. SPSS-20 has been used to analyze the data. Based on the analysis a conclusion has been drawn that use of social media has an effect on the successful implementation of CRM in Carrefour chain stores in Erbil.