Obviously coffee, teas, and caffeinated sodas (like Mountain Dew, Coca-Cola, Diet Coke, and Dr. Pepper) have caffeine. However, even decaffeinated coffee and teas have slight amounts of caffeine. Chocolate has caffeine (darker and bittersweet chocolates have higher amounts than sweetened or milk chocolate, and white chocolate actually has none!) Coffee flavored products like Mocha Ice Creams, frozen yogurts, and yogurts have caffeine and so do some breakfast cereals. If you are concerned about even the smallest amounts of caffeine, read labels before you buy!