Yttrium(III) nitrate is an inorganic compound, a salt with the formula Y(NO3)3.

Yttrium(III) nitrate can be prepared by dissolving corresponding metal oxide in 6 mol/L nitric acid:[1] Yttrium(III) nitrate hexahydrate loses crystallized water at relatively low temperature.

[3] Y(NO3)3·3TBP is formed when tributyl phosphate is used as the extracting solvent.

[4] Yttrium(III) nitrate is mainly used as a source of Y3+ cations.

It is a precursor of some yttrium-containing materials, such as Y4Al2O9,[3] YBa2Cu3O6.5+x[2] and yttrium-based metal-organic frameworks.