Yes, you can juice apples whole! However, there are a few things to keep in mind. First, your juicer needs to be powerful enough to handle whole apples. Second, you'll need to cut the apples into quarters or smaller pieces so that they fit into your juicer's feed chute. And finally, expect your yield to be lower when juicing whole apples compared to juicing apple slices or chunks. But if you've got a hankering for some fresh-pressed apple juice, go for it!