Wilhelm "Willi" Agatz (10 June 1904 – 29 August 1957) was a German trade unionist, politician and resistance fighter of the Communist Party (KPD) who served in the Reichstag before World War II and the Bundestag after.

After completing his apprenticeship, he joined the Union of Miners of Germany (VdBD) and was elected to the works council at the Ludwig mine.

In 1930, he was expelled from the VdBD for his communist politics,[3] and soon after became involved in the Revolutionäre Gewerkschafts Opposition (RGO), organizing in the Ruhr region.

[1] Agatz joined the RGO's national leadership in 1931, and served as Chairman of the Unified Association of German Miners (EvBD) from May 1932 to April 1933, succeeding Albert Funk.

In September 1933, he moved to the Schöneberg district of Berlin and became National Leader of the RGO after Fritz Schulte was forced to flee the country, organizing the union's illegal work until his own arrest on 18 January 1934.

[5] After his release from captivity, Agatz returned to Essen and helped establish the Industrial Union of Mining (IG Bergbau).

[2] In 1946, Agatz was appointed a member of the Landtag of North Rhine-Westphalia, where he was active in the labor and economic committees and advocated for the socialization of mining.

[5] The chief physician's report stated: "From the medical history it was clear that Mr. Agatz had been exposed to severe physical and mental stress as a result of Nazi violence.

[...] After the malaria treatment, he developed heart problems with shortness of breath, which meant that physical exertion was very poorly tolerated.