Ralf Jäger (born 25 March 1961 in Duisburg) is a German politician.
He is a member of the SPD.
Since 2000 he is a MP of the Landtag, the parliament of North Rhine-Westphalia.
Between 2010 and 2017 he served as Minister for Interior and Local Government of North Rhine-Westphalia, in the cabinet of Minister-President Hannelore Kraft.
In 2014 he was chairman of the Standing Conference of Interior Ministers ("Innenministerkonferenz", IMK) in Germany.