E-commerce, which is defined as making commercial transactions in electronic environment, is becoming widespread day by day with the increase in the use of internet and mobile devices. Especially with the effect of COVID-19, the consumption habits of individuals have changed greatly, increasing the interest in electronic sales channels. Regardless of big or small, most companies and retailers are looking for ways to address their customers through electronic channels due to the effect of COVID-19. In this process, the rapidly increasing trend of electronic commerce raises one of the important issues of companies, "In which e-marketplace should we sell?”. Based on this issue, in this study, five criteria that are important in choosing the right e-marketplace were determined and eight online alternative e-marketplaces were evaluated. In the study carried out by using neutrosophic fuzzy AHP and EDAS methods, which are multi-criteria decision making techniques, a framework has been established for choosing the right e-commerce marketplace for sellers.