Liga, Germany's third tier of its football league system.
Liga champions VfL Osnabrück and runners-up Erzgebirge Aue were promoted to the 2.
They were replaced by TuS Koblenz and Rot Weiss Ahlen who finished 17th and 18th respectively in the 2009–10 2.
No major changes happened to the capacities of the team's stadia during the off-season.
Liga Player of the season, with Alexander Esswein announced as the winner on 3 June after a public vote.