For “centuries” manufacturers have been using marketing tools to disseminate information to customers regarding their products. The development of internet has forced companies to use digital technologies to interact with customers and tell them about their products. The purpose of this study was to analyse the impact of digital marketing on brand awareness among the customers of sportswear in Dar es Salaam City, Tanzania. This study applied analytic cross-sectional design to analyse quantitative collected from sportswear customers that were selected using simple random technique. The data was gathered using structured questionnaire from 250 sportswear customers in Kigamboni and Kinondoni districts. Data were analysed using descriptive statistics and multiple linear regression model. The findings of this study indicate that, five marketing tools namely, content marketing, social media marketing, affiliate marketing, paid advertising marketing and pay-per-click marketing have positive and significant impact on brand awareness. On the contrary, e-mail marketing was found to have non-significant impact on brand awareness. This study has informed customers that searching for information regarding sportswear products is less time consuming and low cost. Moreover, this study informs sportswear manufacturers have to use more paid advertisements marketing since they capture more customers. Based on the findings, this study recommends that sportswear to invest heavy and continue to improve their paid advertising and pay-per-click marketing campaigns and to combine digital marketing and traditional marketing strategies for effective ad wide coverage in order to achieve higher brand awareness. The two-marketing media can create a synergy that is more beneficial than using either medium separately.