Yes. To freeze properly, place them apart on a flat surface or baking sheet in the freezer so that each one freezes individually. Freeze for about an hour. Next place each in an air-tight container or Ziplock bag.  You can also wrap in plastic wrap or foil tightly. It is best to freeze whole baked potatoes that have not been cut and have definitely not been dressed with any toppings  To defrost, remove the number of potatoes you want from the freezer and place in the fridge for 24-48 hours, depending on the size of the potato.