A magnesium compound represented by Formula 1 wherein the magnesium compound is dissolvable in an ether solvent, an electrolyte solution for magnesium batteries that includes the magnesium compound and a magnesium battery including the electrolyte solution are provided: wherein, in Formula 1, X1 is a halogen atom; and at least one of X2 and X3 each independently is an electron withdrawing group, wherein, when X2 or X3 is not an electron withdrawing group, X2 or X3 is a hydrogen atom, a C1-C20 alkyl group, or a C6-C20 aryl group.