Hugo Sinzheimer (12 April 1875 – 16 September 1945)[1] was a German legal scholar and contributed to the writing of the Weimar Constitution.

[2] Sinzheimer was one of the first academics specialising in labour law; he published an introduction to this field (Der korporative Arbeitsnormenvertrag) in 1907.

He was inspired by the ideals of the dignity and liberty of every human being, and was a humanist in the widest sense of the word.

The Sinzheimer Institute of the University of Amsterdam's Law Department is named after him in his honour.

[3] Archival material relating to Hugo Sinzheimer's professional activity as a labour lawyer and professor is held by the Leo Baeck Institute in New York.