No, citizens and permanent residents of the United States cannot use an Interrail pass; instead, they must use the "Eurail Pass." While both passes are managed by the same organization (Eurail B.V.) and offer nearly identical access to the rail networks of 33 European countries, they are strictly divided based on residency. The Interrail pass is reserved exclusively for European residents (including UK, Turkish, and Russian residents), whereas the Eurail pass is designed for overseas visitors from the Americas, Asia, Oceania, and Africa. If an American traveler attempts to board a train with an Interrail pass, it will be considered invalid, and they may face a heavy fine because they cannot provide the required European proof of residency. For an American, the Eurail Global Pass is the correct choice, providing the same "all-you-can-ride" flexibility for the same price and under the same reservation rules as its Interrail counterpart. Dual citizens living in the US should also opt for Eurail, as the pass you use is determined by where you currently reside, not your nationality.