|A.K.A.||Retzlaw, Karl Gröhl|
|Birth||10 February 1896, Piła, Poland|
|Death||20 June 1979, Frankfurt am Main, Germany (aged 83 years)|
|Politics||Communist Party of Germany, Social Democratic Party of Germany, Independent Social Democratic Party of Germany|
Karl Retzlaw (10 February 1896 – 20 June 1979) was a German politician, representative of the Social Democratic Party, Independent Social Democratic Party of Germany and Communist Party of Germany.
Retzlaw was born Karl Gröhl in Schneidemühl, Province of Posen (today Pila, Poland) and died in Frankfurt.