Corps (/kɔːr/; plural corps /kɔːrz/; from French corps, from the Latin corpus "body") is a term used for several different kinds of organization. A military innovation by Napoleon, the formation was first named as such in 1805. The size of a corps varies greatly, but from two to five divisions and anywhere from 40,000 to 80,000 are the numbers stated by the US Department of Defense.

Within military terminology a corps may be:

These usages often overlap.

Corps may also be a generic term for a non-military organization, such as the US Peace Corps and European Solidarity Corps.