The 2010 G20 Toronto summit was the fourth meeting of the G20 heads of state/government, to discuss the global financial system and the world economy, which took place at the Metro Toronto Convention Centre in Toronto, Ontario, Canada, during June 26–27, 2010. The summit's priorities included evaluating the progress of financial reform, developing sustainable stimulus measures, debating global bank tax, and promoting open markets. Alongside the twenty-one representatives of the G20 major economies, leaders of six invited nations, and eight additional intergovernmental organizations also took part in the summit.

The G20 or Group of 20 is an intergovernmental forum comprising 19 sovereign countries, the European Union (EU), and the African Union (AU). It works to address major issues related to the global economy, such as international financial stability, climate change mitigation and sustainable development.