Quad

Quad as a word or prefix usually means 4. It may refer to:

==Government== Quadrilateral Security Dialogue, a strategic security dialogue between Australia, India, Japan, and the United States Quadrilateral group, an informal group that includes the trade spokesmen of the United States, Japan, Canada, and the European Union I2U2 Group, a strategic partnership between the United States, India, Israel, and United Arab Emirates; also known as the "Middle East Quad" Quad Cities, a group of five cities straddling the boundary between the U.S. states of Iowa and Illinois The "Quad", the senior members of the Cameron–Clegg coalition government in the United Kingdom from 2010 to 2015