Charlotte Bischoff (née Wielepp; 5 October 1901 – 4 November 1994) was a German Communist and Resistance fighter against National Socialism.

During that period she became politically active and joined the Freie Sozialistische Jugend (Free Socialist Youth) and the Young Communist League of Germany.

In 1941, on behalf of the exiled leadership of the KPD, then under Herbert Wehner, Bischoff was successful in entering Germany illegally on board a freight ship.

Die Innere Front was able to continue publication and distribution, even after numerous resistance fighters had been arrested, due to the work of Bischoff, Otto Grabowski, and Ernst Sieber (Widerstandskämpfer).

A couple of weeks earlier her husband Fritz Bischoff had been one of thousands drowned off the coast at Lübeck when a liner/prison ship on which he was being held was sunk by the British.

[6] She then worked at a succession of jobs with the Free German Trade Union Federation (Freier Deutscher Gewerkschaftsbund, FDGB).

The entire Soviet zone would be reformed as the German Democratic Republic, formally founded only in October 1949, but already in April 1946 the contentious merger between the old Communist Party and the Moderate-left SPD created the precondition for a return to one-party rule.

Bischoff was one of thousands of former Communists who now lost no time in signing their membership over to the new Socialist Unity Party (SED /) Sozialistische Einheitspartei Deutschlands).

The writer Eva-Maria Siegel thinks this was probably because she included various corrections to the official historical ideology, notably in respect of the contribution of Karl Mewis.