Which breakfast cereals do not contain barley?

Many breakfast cereals are barley-free, especially those made primarily from corn, rice, oats, or wheat. Examples of barley-free cereals include Corn Flakes, Rice Krispies, and CheeriOS. It's essential to check the ingredient labels, as formulations can change, and some brands may have barley in certain products. For gluten-free options, look for certified gluten-free cereals, as they typically do not contain barley.