In an attempt to investigate the influence of competitive strategies on the competitiveness of the largest Brazilian companies, a descriptive, documentary and quantitative study was conducted to treat the data considering the one hundred largest publicly traded companies listed on the Brasil, Bolsa, Balcão (B3), according to the ranking Biggest and Best of 2020 of the Exame magazine, in the period from 2016 to 2020. The results showed that the competitive strategies Corporate Social Responsibility (CSR), internationalization and innovation positively influence competitiveness, denoting that the more the company invests in these strategies, the more the organization will become competitive, confirming the general hypothesis of the study. Thus, it can be seen that to achieve greater competitiveness, companies seek competitive strategies of CSR, internationalization and innovation.