Calcium selenide (CaSe) is a chemical compound consisting of the elements calcium and selenium in equal stoichiometric ratio.
Calcium selenide can be prepared via the reaction of calcium and H<sub>2</sub>Se in liquid NH<sub>3</sub>.
Calcium selenide reacts with indium(III) selenide in vacuum at high temperature to give CaIn<sub>2</sub>Se<sub>4</sub>.