Yes, apples are naturally gluten-free. Gluten is a type of protein found in wheat, barley, rye and their derivatives, and does not naturally occur in fruits, including apples. Keep in mind that processed apple products, like apple pie, caramel apples, or apple sauce, could potentially contain gluten due to added ingredients or cross-contamination during manufacturing, so check labels if you have celiac disease or a severe gluten intolerance.