Can hard cheese be frozen?

Yes. It will keep for up to 6 months. However, the cheese may become mealy and crumbly when thawed. In fact, thawed cheese is best used crumbled or shredded in salads, or as a topping on a cooked dish.
 
Some cheeses freeze better than others. Because blue cheese varieties such as Roquefort and Gorgonzola are generally used crumbled, alteration of their texture isn't likely to matter. Bottom line: Consider how you plan to use a cheese before you decide to freeze it.
 
Store the cheese in a sealable freezer bag. Press down on the bag before sealing it. This will remove oxygen from the bag and help prevent freezer burn.
 
Some harder cheeses such as Parmesan and Romano keep in the refrigerator for extended periods of time, making freezing unnecessary.
 
Source(s):
GourmetSleuth.com "Food Storage Guidelines” 
Old Farmers Almanac "Questions and Answers: Can I Freeze Cheese?"
National Dairy Council "Cheese"