The Commonwealth Heads of Government Meeting is a biennial summit meeting of the governmental leaders from all Commonwealth nations. Despite the name, the head of state may be present in the meeting instead of the head of government, especially among semi-presidential states. Every two years the meeting is held in a different member state and is chaired by that nation's respective prime minister or president, who becomes the Commonwealth Chair-in-Office until the next meeting. Queen Elizabeth II, who was the Head of the Commonwealth, attended every CHOGM beginning with Ottawa in 1973 until Perth in 2011, although her formal participation only began in 1997. She was represented by the Prince of Wales at the 2013 meeting as the 87-year-old monarch was curtailing long-distance travel. The Queen attended the 2015 summit in Malta and the 2018 summit in London, but was represented again by the Prince of Wales at the 2022 meeting in Rwanda.

The Commonwealth of Nations, often simply referred to as the Commonwealth, is an international association of 56 member states, the vast majority of which are former territories of the British Empire from which it developed. They are connected through their use of the English language and historical-cultural ties. The chief institutions of the organisation are the Commonwealth Secretariat, which focuses on intergovernmental aspects, and the Commonwealth Foundation, which focuses on non-governmental relations among member states. Numerous organisations are associated with and operate within the Commonwealth.