Neodymium(III) perchlorate is an inorganic compound.

It is a salt of neodymium and perchloric acid with the chemical formula of Nd(ClO4)3 – it is soluble in water,[3] forming purple-pink, hydrated crystals.

[2] Nd(ClO4)3 can form alkaline salts, with the general formula of Nd(OH)x(ClO4)3 − x.

The salt with x = 1.5 (saturated with 5 water atoms) is a light purple crystal with d = 2.88 g/cm³.

[4] Nd(ClO4)3 can form compounds with hydrazine, such as Nd(ClO4)3·6N2H4·4H2O which is a small white crystal that is soluble in water, methanol, ethanol and acetone, and insoluble in toluene, with density of 2,3271 g/cm³ at 20 °C.