Copper oxide is any of several binary compounds composed of the elements copper and oxygen. Two oxides are well known, Cu2O and CuO, corresponding to the minerals cuprite and tenorite, respectively. Paramelaconite (Template:Chem2) is less well characterized.<ref>Template:Cite journal</ref>
Copper oxide may refer to:
- Copper(I) oxide (cuprous oxide, Template:Chem2)
- Copper(II) oxide (cupric oxide, CuO)
- Copper peroxide (Template:Chem2), a hypothetical compound
- Paramelaconite (copper(I,II) oxide, Template:Chem2)
- Copper(III) oxide (Template:Chem2) does not exist although Cu(III) is a component of cuprate superconductors
- Copper(IV) oxide (Template:Chem2) has been proposed to exist in the gas phase<ref>Template:Cite journal</ref>