This study seeks to identify the determinants of international human capital, the human capital which enables a firm to compete successfully in the global market. Attempts have been made to fill this gap in the literature by exploring the relationships among global knowledge management (KM hereafter) strategy, knowledge-related human resource management (HRM, hereafter) and international human capital. The results suggest that global KM strategy (technology-centered or people-centered) has an important effect on a broad variety of international human capital measures. In addition, it is found that the relationship between global KM strategy and international human capital (competency of top management teams, input-based, transformational, and output-based international human capital) is moderated by knowledge-related HRM practices. With a people-centered KM strategy, knowledge-related performance management has less of a positive impact on firm outcomes; while the benefits on international human capital of knowledge-related selection and KM-related training can be more easily realized. It is hoped that this model will provide guidance for future empirical studies on international human capital management.