The crystal structure of the compound Ho 2 6 Pd 4 (Pd, Ge) 1 9 - x was determined by the single-crystal method (DARTCH-1 automatic diffractometer, Mo Kα radiation).Ho 2 6 Pd 4 (Pd, Ge) 1 9 - x is a substitutional variant of the Er 2 6 Ge 2 3 - x structure type: space group P4/nmm, a = 14.523(6) ,c = 10.318(2) , V = 2176(2) 3 , Z = 2, R F = 0.0428 for 841 unique reflections.The coordination numbers of the holmium atoms are 14-17. For the germanium atoms tetragonal antiprisms and trigonal prisms are typical as coordination polyhedra. Those for the palladium atoms are trigonal prisms and cubes. All coordination polyhedra have additional atoms.The structure of Ho 2 6 Pd 4 (Pd, Ge) 1 9 - x can be interpreted as being built up of three kinds of fragment formed by rare earth atoms: (a) a stacking of tetragonal antiprisms and cubes; (b) a column of cubes; (c) a chain of trigonal prisms and tetragonal pyramids. The relationships between the Ho 2 6 Pd 4 (Pd, Ge) 1 9 - x structure and the Er 2 6 Ge 2 3 - x and Ce 2 6 Li 5 Ge 2 2 + x structure types are discussed.