Is Johnnie Walker a scotch or whiskey?

It's important to note the difference between "whiskey" and "whisky":

* Whiskey is the general term for any distilled alcoholic beverage made from fermented grain mash.

* Scotch whisky is a specific type of whiskey that must be made in Scotland, using a specific process, and aged for at least three years in oak barrels.

So, while Johnnie Walker is a type of whiskey, it is more specifically classified as a Scotch whisky.