Three-dimensionally　ordered　macroporous　(3DOM)　ceria　with　mesoporous　walls　and　cubic　crystal　structures　were　prepared　with　polymethyl　methacrylate　(PMMA)　as　a　hard　template　and　triblock　copolymer　Pluronic　F127　(EO(106)PO(70)EO(106)),　cetyltrimethylammonium　bromide　(CTAB),　or　poly(ethylene　glycol)　(PEG)　as　a　soft　template.　Citric　acid　was　used　as　a　complexing　agent　and　cerium　nitrate　was　used　as　a　metal　precursor.　The　3DOM　CeO(2)　samples　were　characterized　by　numerous　analytical　techniques.　The　as-fabricated　CeO(2)　samples　had　a　3DOM　architecture　with　polycrystalline　wormhole-like　mesoporous　walls.　The　nature　of　the　soft　template　had　an　important　effect　on　the　pore　structure　and　the　surface　area　of　the　final　product.　The　surface　areas　of　the　F127-,　CTAB-,　and　PEG-derived　3DOM　CeO(2)　samples　(denoted　CeO(2)-F127,　CeO(2)-CTAB,　and　CeO(2)-PEG,　respectively)　were　ca.　60.5,　60.2,　and　51.8　m(2)/g,　respectively.　The　low-temperature　reducibility　of　the　3DOM-structured　CeO(2)　samples　was　much　better　than　that　of　the　bulk　counterpart　and　the　low-temperature　reducibility　of　the　three　3DOM　ceria　samples　increased　according　to　CeO(2)-PEG　＜　CeO(2)-CTAB　＜　CeO(2)-F127,　which　coincided　with　the　surface　oxygen　vacancy　density　sequence.　The　improved　physicochemical　properties　associated　with　the　formation　of　the　3DOM　skeleton　with　wormhole-like　mesoporous　walls　may　be　useful　for　applications　such　as　CeO(2)-materials　in　heterogeneous　catalysis.