The compounds (RE)23+Cr3+Sb5+O7(RE=Y or a rare earth except Ce, Pm, Lu) with pyrochlore structure have asymptotic Curie temperatures between 4° and 16°K; Ho2CrSbO7and Dy2CrSbO7are ferromagnetic belowTc=10°K andTc=16°K, respectively. The moments of the chromium and the rare‐earth ions are oriented parallel in these latter two compounds. The positive Cr3+&sngbnd;Cr3+interaction in the pyrochlore structure is compared to the interaction between chromium ions in other compounds.