The Cities of Johannesburg and Tshwane co-hosted the Urban 20 (U20) Mayoral Summit from 12–14 September 2025 in Johannesburg, South Africa. This prestigious gathering brings together mayors from major G20 cities, providing a platform for essential dialogue that informs the deliberations of national leaders at the G20 Summit.

The U20 Summit is a vital opportunity for mayors to collectively address pressing urban challenges while ensuring that the priorities of cities are elevated within the G20 agenda. As co-chairs of the 2025 U20 cycle, Johannesburg and Tshwane are leading discussions that align with the South African G20 Presidency’s priorities.