Lanthanum nitride is a binary inorganic compound of lanthanum and nitride with the chemical formula LaN.

[1][2] Lanthanum nitride can be prepared from the reaction of nitrogen and lanthanum trihydride: It can also be prepared from the reaction of ammonia and lanthanum trihydride:[3] The reaction of nitrogen and lanthanum amalgam can also work:[4] Lanthanum nitride forms black powder that is insoluble in water.

[1] Their crystals are of the cubic system with the Fm3m space group.

Lanthanum nitride reacts with water and moisture from the air:[6] It reacts with acids: Gerbicidum.

LaN is used as a LED material, magnetic material, semiconductor, refractory material, dyes, catalyst.