In the title complex, [Co(NCS)(2)(C(13)H(19)N(3)O)(H(2)O)], the Co(II) ion is six-coordinated by the N,N',N''-tridentate Schiff base, the N atoms of two thio-cyanate ligands and one water mol-ecule in a distorted octa-hedral geometry. Intra-molecular C-H⋯N and C-H⋯O hydrogen bonds occur. In the crystal, inter-molecular O-H⋯O, O-H⋯S, C-H⋯S and S⋯S [3.5546 (18) Å] inter-actions result in an infinite three-dimensional network.