The G-15 or Group of 15 is an informal forum composed of developing countries, set up to foster cooperation and provide input for other international groups.
G15 or G-15 may also refer to:
Politics G-15 (Eritrea), a group of politicians in Eritrea Group of Democratic Centralism, once called Group of 15, a Russian opposition group
Computing G15, a speedy deletion criterion used by Wikipedia editors to remove unwanted AI-generated content Bendix G-15, a computer Logitech G15, a computer keyboard Samsung Sens G15, a laptop computer
Transportation County Route G15, a road in California G15 Shenyang–Haikou Expressway, an expressway in China connecting the cities of Shenyang and Haikou GER Class G15, a class of British steam locomotive Ginetta G15, a car model Matchless G15, a motorcycle model Prince G-15 engine used in the Nissan Skyline car model
Other Canon PowerShot G15, a digital camera G15 (housing associations), a group of large social landlords in London, UK