The　CeIII　ion　in　the　title　complex,　[Ce(NO3)3(C13H12N4O)2],　is　12-coordinated　by　six　chelating　nitrate　O　atoms　and　six　donors　(2　O　and　4　N　atoms)　of　two　N＇-[1-(2-pyrid-yl)ethyl-idene]isonicotinohydrazide　ligands,　exhibiting　a　bicapped　penta-gonal-anti-prism-type　coordination　geometry.　The　title　complex　possesses　C　2　point　symmetry　and　is　located　on　a　twofold　crystallographic　axis.　Each　mol-ecule　is　linked　with　four　surrounding　mol-ecules　by　four　N　-　HN　hydrogen　bonds,　resulting　in　an　extended　two-dimensional　layer　parallel　to　the　ab　plane,　while　π-π　inter-actions　between　pyridine　rings　from　neighboring　complex　mol-ecules　connect　the　two-dimensional　layers　into　a　three-dimensional　cerium-organic　supra-molecular　structure.　©　2009　International　Union　of　Crystallography.