Harald Ringstorff (25 September 1939 – 19 November 2020) was a German politician of the Social Democratic Party (SPD) and the Minister President of the state of Mecklenburg-Vorpommern.

After his Abitur and military service, Ringstorff studied Chemistry at the University of Rostock.

From 1987 to 1990, he was director of the branch office of the VEB Kali-Chemie ("people's enterprise for potash chemistry").

[2] Since 1990 Ringstorff has been a member of the Landtag of Mecklenburg-Vorpommern where he served as parliamentary leader of the SPD from 1990–1994 and 1996-1998.

After the elections of 2006, he decided to switch to a coalition with the CDU, which would have a more comfortable majority in parliament.