Based on a survey of 90 transnational product introductions, we find that the transnational product development capabilities of organizations significantly depend upon their ability to transfer and deploy tacit knowledge concerning overseas markets. Specifically, we find that organizations which use cross-national teams, teams with members who have prior overseas experience, or teams whose members communicate frequently with overseas managers in order to acquire information about tacit differences among countries have greater transnational product development capabilities. This study contributes to our understanding of how organizations transfer and deploy knowledge across borders for competitive advantage and makes an important contribution to the literature on global strategy.