While economic corridors are vital for the smooth functioning of globalised economies driven by international trade, the measurement of their connectivity―and thus their efficiency―remains an underexplored dimension. Yet this could help policymakers identify areas for development and possible actions. This paper offers a first attempt to measure economic corridors’ connectivity, using a systematic, indicator-base framework, with the Trans-Caspian Transport Corridor, also known as the Middle Corridor, as a case study.