The transferability of vocational education and training (VET) systems is a central issue within international comparative VET research. However, scholars working in related disciplines also focus on the international cooperation associated with VET. This literature review presents relevant findings from the field of VET research, but also from the fields of comparative political economy, comparative educational research, and international human resource management. It explores differences and parallels in research about policy transfer between these fields. For example, scholars working in the comparative political economy and educational sciences tend to focus on transfer activities at the systemic level, while those working in international human resource management tend to focus on regional management strategies, and scholars working in VET research focuses on successes and obstacles associated with cooperation. All of these features are interconnected, providing important insights into the transferability of VET systems. The following discussion begins by exploring the rationales underpinning different disciplinary perspectives on policy transfer in VET. Next, it reviews empirical research on the transfer of VET policies from different disciplinary perspectives. It concludes with a critical reflection on the transfer potential -- and how scholars in all relevant disciplines stress the need for cultural sensitivity, adaption, and long-term planning when transferring policy from one country to another.