The crystal structure of the cubic compound Ni₂Sn₂Zn is related to that of Ni_5.20Sn_8.7Zn_4.16Cu_1.04 and shows common structural elements with the atomic arrangements of the high-temperature phase of Ni₃Sn₂ and with Ni₅Sn₄Zn. It exhibits a considerable homogeneity range, along with mixed occupations and partially occupied sites.