Johannes Giesberts (3 February 1865 - 7 August 1938) was a German politician of the Centre Party in the Weimar Republic.

He became active in trade union politics during this time, joining the Catholic Workers' Movement in 1893 and becoming a city councillor in Mönchengladbach.

He quit working as a laborer in 1899, becoming an editor for the Westdeutsche Arbeiterzeitung, which was the organ of the Catholic workers' associations.

After they took power, he was briefly a prisoner and then became politically silent, with the Gestapo labelling him as having "no longer carried out any activity".

[10] Giesberts first entered local politics as a city councillor in Mönchengladbach in 1892 as part of the Centre Party, a position he would hold until 1918.

[16] On 13 February 1919 he was appointed Reich Postal Minister, the first to serve in this point after it succeeded from the Reichspost, as part of Philipp Scheidemann's cabinet.

[23] New regulations are put in place, specifying a fee for telegrams at 20 Pfennigs for each word, and also revising the amount for telephones.

[26] Upon the implementation of the Weimar Constitution, by Article 170, Bavaria and Württemberg's telegraph agencies were ordered to be taken over by the Reich by 1 April 1921, although after 1 October 1920 the Reichsgericht would decide the case.

[27] Bavaria and Württemberg's postal systems were merged into the Reichspost on 1 April 1920, in accordance with treaties signed in March.

[1] After the Nazi Party took power, he briefly had to serve a prison sentence for offences against the Cooperative Act.

[3] In September 1935 he moved from Grunewald to Mönchengladbach and in a 1937 internal letter by the Gestapo was described as having "no longer carried out any activity.