Dieter Stier (born 29 June 1964) is a German politician.

Born in Weißenfels, Saxony-Anhalt, he represents the CDU.

Dieter Stier has served as a member of the Bundestag from the state of Saxony-Anhalt since 2009.

He became member of the bundestag after the 2009 German federal election.

This biography article about a member of the Christian Democratic Union of Germany (CDU) is a stub.