Sodium nitrate is the chemical compound with the formula NaNO3. It is a white solid which is very soluble in water. The mineral form is also known as nitratine or soda niter.

Sodium nitrate is used as an ingredient in fertilizers, pyrotechnics, as a food preservative, and as a solid rocket propellant, as well as in glass and pottery enamels; the compound has been mined extensively for those purposes.