Can I buy a Powerball ticket if I'm not from the U.S.?

No, there is no way to buy tickets online. You have to be in the United States to purchase a ticket, you don't have to live here as tourists can win but if you're over in Europe you won't be able to buy tickets unless you know someone over here to buy them for you. Honestly you are saving money by not purchasing tickets.

No, you can only win if you're a resident of the U.S.

"Best Answer" to TB. He is right as usual. I just wanted to add one thing.

If ANYONE tells you they can sell you PowerBall tickets on-line, they are SCAMMING you!

Your only chance is to fly here and buy a ticket. But a foreigner will be subject to far higher taxes if they do win.