Abstract Libra is the first private cryptocurrency with the potential to change the landscape of global payment and monetary systems. Due to the scale and reach provided by its affiliation with Facebook, the question is not whether, but how, to regulate it. This article introduces the Libra project and analyses the potential responses open to regulators worldwide. We conclude that perhaps the greatest impact will come not from Libra itself, but rather from reactions to it, particularly by other BigTechs, incumbent financial institutions and governments around the world.