Curium(III) iodide is the chemical compound with the formula CmI3.

[1][2][3] Since all isotopes of curium are only artificially produced, the compound has no natural occurrence.

[4] Also by the reaction of curium(III) chloride with ammonium iodide:[5][6] Curium(III) iodide is a colorless ionic compound consisting of Cm3+ and I− ions.

It forms white crystals the hexagonal crystal system in the space group R3 (space group no.

Its crystal structure is isotypic with that of bismuth(III) iodide.