Legal principles are an essential element of jurisprudence. They help to systemize, to comprehend and to further develop a legal order. Although International Internet Law is quite a new legal subject, some principles begin to evolve. The article addresses five emerging core principles of International Internet Law: (1) The principle of internet freedom, (2) the principle of privacy, (3) a modified principle of territorial jurisdiction adapted to cyberspace, (4) the principle of interstate cooperation, and (5) the principle of multi-stakeholder cooperation.