Californium(III) iodide is a binary inorganic compound of californium and iodine with the formula CfI3.

[2][3] Californium triiodide can be prepared in microgram quantities under high vacuum.

It can be prepared at 500 °C from californium(III) hydroxide and hydrogen iodide: The compound forms a red-orange solid.

148) with the lattice parameters a = 758.7 pm and c = 2081.4 pm with six formula units per unit cell.

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