Disclosed is an aqueous lubricant composition for metal material working which is excellent in workability, degreasing property and working conditions. The aqueous lubricant composition is suitably used in fields of plastic working, particularly in fields of warm press forming, of various metal materials, especially of magnesium-base or aluminum-base nonferrous metal materials. The aqueous lubricant composition for metal material working contains (A) a solid lubricant, (B) at least one selected from (i) organic metal carboxylates and (ii) metal salts of organic phosphate esters or borate esters, and if necessary (C) a nitrogen-containing compound.