Lutetium(III) nitrate is an inorganic compound, a salt of lutetium and nitric acid with the chemical formula Lu(NO3)3.

[2] Dissolving lutetium oxide in nitric acid: To obtain anhydrous nitrate, the powdered metal is added to nitrogen dioxide dissolved in ethyl acetate: Lutetium(III) nitrate forms colorless hygroscopic crystals.

Forms crystalline hydrates of the composition Lu(NO3)3•nH2O, where n = 3, 4, 5, 6.

[4] The compound forms ammonium hexafluoroluthenate with ammonium fluoride: Lutetium(III) nitrate is used to obtain metallic lutetium and also as a chemical reagent.

It is used as a component of materials for the production of laser crystals.