The paper aims to study the impact of internationalization on sales growth of manufacturing enterprises in Bulgaria during the 2019-2020 Covid-19 period. Building upon the resource-based view theory and a survey data collected from 237 enterprises in Bulgaria, the results show that internationalization negatively impacts on sales growth of manufacturing enterprises in Bulgaria during the 2019-2020 Covid-19 period together with disruption duration. In contrast, government support is positively related to sales growth. The implications of this study aim to promote internationalization activities of enterprises in Bulgaria during Covid-19 period.

Key words: internationalization; sales growth; Bulgaria; Covid-19 pandemic.