what is the official language of the g20 summit?

The official language of the G20 summit is not specified in the search results. However, it is known that the G20 operates without a permanent secretariat or staff, and the groups chair rotates annually among the members and is selected from a different regional grouping of countries. The incumbent chair establishes a temporary secretariat for the duration of its term, which coordinates the group's work and organizes its meetings. It is possible that the official language of the summit may vary depending on the host country and the languages spoken by the participating members.