In the title compound, [HgCl(2)(C(15)H(13)N(5))(2)], the Hg(II) atom is located on a twofold rotation axis and resides in a distorted tetra-hedral coordination environment composed of two Cl atoms and two N atoms from two 1-(2-methyl-benzimidazol-1-ylmeth-yl)benzotriazole ligands.