Europium(III) nitrate is an inorganic compound with the formula Eu(NO3)3·x(H2O).

[2] Like all trinitates of the lanthanides, dilute (<0.01 M) solutions of consists of the aquo complex [Eu(H2O)x]3+ where x = 8 or 9.

At higher concentrations, the binding of nitrate to Eu is observed.

[3] Europium(III) nitrate reacts with anions and other Lewis bases to form complexes.

For example, with 1,3,5-trimesic acid, europium metal-organic framework, a coordination polymer, under hydrothermal conditions.