Cerium(III) acetylacetonate is a compound with formula Ce(C<sub>5</sub>H<sub>7</sub>O<sub>2</sub>)<sub>3</sub>(H<sub>2</sub>O)<sub>x</sub>. It is typically isolated as the trihydrate. Partial dehydration gives the dihydrate, a red-brown solid.
Cerium acetylacetonate is a precursor to mesoporous nanocrystalline ceria using the sol-gel process. It can also be used along with gadolinium acetylacetonate to synthesize gadolinia-doped ceria (GDC) gel powders.