The title compound, [Co(C(14)H(14)Cl)(C(4)H(6)N(2)O(2))(2)(C(5)H(5)N)], is a model compound for the more complex cobalamines like vitamins B(12). The Co(III) atom is coordinated by a (4'-chloro-methyl-[1,1'-biphen-yl]-4-yl)methyl group, an N-bonded pyridine and two N,N'-bidentate dimethyl-glyoximate ligands in a distorted octa-hedral geometry. The glyoximate ligands exhibit intra-molecular O-H⋯O hydrogen bonds, which is very common in cobaloxime derivatives.