Trittau is a municipality located in the state of Schleswig-Holstein, Germany. It is situated approximately 30 km east of the city of Hamburg.
The town serves as the economical and administrative center of Amt Trittau, which is part of the Stormarn district. Other villages within this county include Grönwohld, Lütjensee, Großensee, Rausdorf, and Grande.