Most international students need a valid visa for entering Germany. For detailed information on regulations, please refer to the Deutscher Akademischer Austauschdienst (DAAD) website, on page Visa/Entry into the country.

Immediately after you have arrived in Hanover, you have to apply for a residence permit. The DAAD has worked out a detailed information sheet answering all questions on visa and right of residence: Information on the Statutory Frameworks applicable to Entry and Residence by Foreign Students, Academics and Researchers [PDF].