This work explores the relationship between exports, Global Value Chains' (GVCs) participation and position, and firms' productivity. To this aim, we combine the most recent World Bank Enterprise Survey in Latin American and Caribbean (LAC) countries with the OECD-WTO trade in value added data. To explore the above relationship we adopt an extended version of the standard Cobb-Douglas output function including indicators of export performance and GVCs. We control for heterogeneity among firms (by country, region, and industry), sample selection, firms' characteristics and reverse causality. Our empirical outcomes confirm the presence of a positive relationship between participation in international activities and firm performance. They also...