Celiac.com 04/23/2026 - Soy sauce is one of the most widely used condiments in the world, found in everything from stir-fries and marinades to dipping sauces and packaged foods. For people with celiac disease or gluten sensitivity, however, a simple question becomes very important: Is soy sauce gluten-free? The answer is not as straightforward as many people expect. While soy sauce sounds like it should be made from soybeans alone, traditional recipes often include wheat.