Johannes Sassenbach (12 October 1866 – 19 November 1940) was a German trade union leader and politician.
In 1890, he joined the Social Democratic Party, and in 1891, he was elected as chair of the Saddlers' Union, also serving as editor of its journal.
[1][2] In 1902, Sassenbach was elected to the executive of the General Commission of German Trade Unions, serving until 1922.
He also won election to Berlin City Council in 1905, serving until 1919, and was a co-founder of the country's socialist youth movement.
[1][2] In 1919, Sassenbach was appointed as attache to the German embassy in Rome, then from 1920 to 1923, he chaired the Berlin school for continuing education.