No. This product is not soy free as it lists 1 ingredient that contains soy.

Is Optimum Nutrition Whey Protein Isolate Vanilla -- 20 Servings Soy Free?

No. This product is not soy free as it lists 1 ingredient that contains soy.
Soy Free? Optimum Nutrition Whey Protein Isolate Vanilla -- 20 Servings | Spoonful