Christian Kleiminger (27 December 1965 in Osnabrück) is a German politician and member of the Social Democratic Party of Germany (SPD).

As a representative of the German Bundestag, Kleiminger was elected Chairman of the Board of Trustees of the Federal Foundation "Humanitarian Aid for Persons Infected with HIV through Blood Products" (German: Bundesstiftung „Humanitäre Hilfe für durch Blutprodukte HIV-infizierte Personen“) on 15 November 2006 in Bonn.

He participated as a member of the delegation of the Parliamentary Assembly of the Organization for Security and Co-operation in Europe (OSCE-PA) as an observer in the election to the Russian State Duma on 2 December 2007.

He subsequently described the parliamentary elections to the media as unfair, citing an economic and personnel superiority of the United Russia party, which is influenced by President Vladimir Putin, because the opposition had had no real chances.

[3] On 15 February 2008 Kleiminger was elected as an assessor to the federal executive committee of the Forum Demokratische Linke 21, a leftist association within the SPD, in Berlin.