Cornelia Pieper (née Richter; born 4 February 1959) is a German politician of the liberal Free Democratic Party (FDP).

She worked as an interpreter in the tourism and cultural sector until 1985, after which she was employed in the IT department at a television production company in Halle.

A close political ally of Guido Westerwelle, she supported him from 2001 to 2005 as the party's secretary general.

Following the 2009 federal elections, Pieper was part of the FDP team in the negotiations with the CDU/CSU on a coalition agreement.

She was part of the FDP delegation in the working group on education and research policy, led by Annette Schavan and Andreas Pinkwart.

From 2009 to 2013, Pieper served as the Minister of State at the Federal Foreign Office, responsible for cultural relations and education policy.

During her time in office, she publicly criticised Russia’s human rights policy, particularly after the arrest of members of the protest group Pussy Riot.