Aluminium acetylacetonate, also referred to as Al(acac)<sub>3</sub>, is a coordination complex with formula Al(C<sub>5</sub>H<sub>7</sub>O<sub>2</sub>)<sub>3</sub>. This aluminium complex with three acetylacetone ligands is used in research on Al-containing materials. The molecule has D<sub>3</sub> symmetry, being isomorphous with other octahedral tris(acetylacetonate)s.
Aluminium acetylacetonate can be used as the precursor to crystalline aluminium oxide films using low-pressure metal organic chemical vapour deposition. In horticulture it can also be used as a molluscicide.