Vanadium(III) sulfate is the inorganic compound with the formula V2(SO4)3.

It is a pale yellow solid that is stable to air, in contrast to most vanadium(III) compounds.

It slowly dissolves in water to give the green aquo complex [V(H2O)6]3+.

When heated in vacuum at or slightly below 410 °C, it decomposes into vanadyl sulfate (VOSO4) and SO2.

Vanadium(III) sulfate is stable in dry air but upon exposure to moist air for several weeks forms a green hydrate form.