The mid-term review (MTR) for the project “Promoting Minamata Convention on Mercury by making the most of Japan’s knowledge and experiences’” is undertaken half-way through project implementation to analyse whether the project is on-track, what problems or challenges the project is encountering, and what corrective actions are required. The MTR will assess project performance to date (in terms of relevance, effectiveness, and efficiency), and determine the likelihood of the project achieving its intended outcomes and supporting their sustainability.