Commercial diplomacy is an important part of diplomacy. It is likely that in post-COVID-19 times, it will become even more important as a means contributing to faster economic recovery of countries. Performance measurement has been gaining importance in commercial diplomacy practice. It is not only about controlling people, identifying weak points and dysfunctions, and possible repressions, but also serves many positive purposes (e.g. improving operations, building trust with stakeholders, or enabling data-based advocating for higher budgets). The article will discuss what metrics can be used to measure performance in commercial diplomacy