Barium nitrite is a chemical compound, the nitrous acid salt of barium.

It has the chemical formula Ba(NO2)2.

It is a water-soluble yellow powder.

Barium nitrite can be made by reacting barium nitrate with lead metal sponge, or by reaction of lead nitrite with barium chloride.

[1] Barium nitrite is toxic if ingested or inhaled, as both barium and the nitrite ion are toxic.