Most often if you order dragon rolls from a sushi restaurant, they will not be gluten free as the shrimp tempura contains flour and the unagi (eel) sauce contains soy sauce, which is not gluten free. However, if you make your own dragon rolls, you can substitute the flour for a gluten free 1 to 1 substitute and you can either omit the unagi sauce or make your own with gluten free soy sauce.