Vanadium(III) acetylacetonate is the coordination compound with the formula V(C<sub>5</sub>H<sub>7</sub>O<sub>2</sub>)<sub>3</sub>, sometimes designated as V(acac)<sub>3</sub>. It is an orange-brown solid that is soluble in organic solvents.
The complex has idealized D<sub>3</sub> symmetry. Like other V(III) compounds, it has a triplet ground state.
The compound is prepared by reduction of ammonium vanadate in the presence of acetylacetone.
V(acac)<sub>3</sub> is a common precatalyst for the production of EPDM polymers.
It has also been shown to be a precursor to vanadium pentoxide nanostructures.