Magnetic structure of Dy[Fe(CN) 6 ]·4D 2 O was determined by means of neutron powder diffraction. The magnetic structure consists of Fe and Dy sublattices, which are coupled antiferromagnetically leading to overall ferrimagnetic ordering with the Curie temperature T c =3.7K. While for Fe-atoms the y-component of magnetic moment is large and the z-component is negligible, in the case of Dy-atoms the x-and the y-magnetic moment components are large and the arrangement of magnetic moments on Dy-sublattice is non-collinear. In this magnetic structure the y-components of magnetic moment on Dy and Fe atoms are anti-parallel. Our magnetic structure refinement yields the moment value of 11.06μ B for dysprosium and 1.61μ B for iron atoms.