Oskar Baum (21 January 1883 – 20 March 1941) was a Czech music educator and writer in the German language.

Baum was born on 21 January 1883 in Plzeň,[1] as the son of a Jewish cloth goods merchant.

In 1904, Baum made the acquaintance of Max Brod and Ludwig Winder with Franz Kafka and Felix Weltsch.

[1][2] Shortly after his death his wife Margarete was deported to Theresienstadt Ghetto where she died a year later.

[2] His only son Leo (born 1909) died on 22 July 1946 in the King David Hotel bombing by Irgun in Jerusalem.