Although that particular object is most often described as a can of Pringles, I'm going to go out on a limb and argue that this shape is more often called a cylinder.
A can is generally short, may be squat, and is usually made of metal. A cylinder is long and narrow with no default construction material assumed.
If you wanted Pringles, can is the right word. If you want a generic container like the one shown, cylinder will work better. As choster mentions below, a canister is often used for a cylinder that is used for food storage.
And also, this is sometimes called a sleeve of Pringles. You can google it; here's an example from QuickMeme.