Margarete Bloch (21 March 1892 – Precise date unknown, 1944, Auschwitz concentration camp) was a friend of Felice Bauer and a pen-friend of Franz Kafka.

At age 16, after finishing her education, she found work in the office machine industry and helped supplement the family income.

During this time he also wrote the novel Das Urteil (The Judgement) and parts of the novel Der Verschollene (The Missing; later the English book: The Man who Disappeared; in other languages often: America).

Grete Bloch wanted to help Felice Bauer in this regard and stopped in Prague during a business trip between Berlin and Vienna.

[2] She met Franz Kafka at the Hotel Schwarzes Ross (Black Steed) in order to persuade him to meet Felice in person in Berlin.

[3] But the result was that Kafka also started an intensive pen-relationship with her, in which he used her as a ‘wailing wall’[4] and where her private problems also became subjects of discussion.

So it is probable that Grete Bloch, contrary to her intention, caused Felice and Franz to break up and made Kafka write his great novel.