cis-bis(Monoethanolamine)oxalatocopper(II), cis-[Cu(mea)2(ox)], has been prepared and characterized by elemental analyses, IR, UV-Vis, thermal analysis and single crystal X-ray diffraction. The title complex crystallizes in the triclinic form with P (1) over bar space group. The copper(II) ion lies on a center of symmetry and is octahedrally coordinated by two bidentate neutral mea (N,O) and one bidentate ox (0,O') ligands. The individual molecules are held together by an extensive three-dimensional network of O-(HO)-O-..., N-(HO)-O-... and C-(HO)-O-... type intermolecular hydrogen bonds. The IR spectrum and thermal decomposition of the title complex are described.