A coin of low value, brown or copper colored

Copper is a reddish-colored metallic element, widely used in manufacturing and industry. Copper may also refer to:

A boiling tank used in beer brewing

Police officer, in British slang; hence the American slang cop

Copper Butterfly, the common name for the butterfly family Lycaenidae

A large copper vessel used for heating water and laundry (archaic)

Copper Mountain (Colorado) in Colorado, USA

Copper (color), the color of the metal

Agkistrodon contortrix mokasen, a venomous snake found in the United States.

Copper River (Alaska)

Copper Age, a phase in human technological development

Copper Riot, a major riot which took place in Moscow in 1662

Copper Mountain (Alberta) in Alberta, Canada

Copper (comic), a web and print comic

Copper, the name of the hound in novel The Fox and the Hound

Copper Mountain, a 1983 film

Copper (band), a rock band from Buffalo, New York

Copper Mountain (British Columbia) in British Columbia, Canada

The Manhattan Project's codename for plutonium. Actual copper was called "honest-to-God copper" (a pun on the slang for police officer)