Is there a good working ATM in Athens airport to get Euros upon arrival?

Thanks!

More than one

Walk down the hall outside Arrivals and you will pass several.

There are plenty. When you will pass the arrivals gate walk on your left.

Cindy, whichever ATM you find & use, beware of one thing -- some of these now offer something called "Dynamic conversion" --- Do NOT opt for this. What this choice offers, as a supposed "Advantage" is that, when you punch in that you want for instance 300 Euros, the screen will show what that amounts to in Dollars. However this will cost you Big Bucks, because the software performs a conversion that charges you a hefty percentage. Just say NO to this, take the 300 Euros, and figure out on your own that day's best exchange rate is. The current rate is updated constantly on http://www.xe.com/currencyconverter/ .