Hugo Urbahns (18 February 1890 – 16 November 1946) was a German communist revolutionary and politician.
He was involved in the Communist Party of Germany (KPD) in the 1920s. He was jailed for his role in the Hamburg Uprising of 1923, and spent time on hunger strike.Frank, Pierre The Long March of the Trotskyists: A History of the Fourth International Chapter 3
He was expelled from the KPD in the late 1920s, and became the leader of the Leninbund, a left split from the KPD.
For a time he had links with Leon Trotsky, but they drifted apart over a number of issues, including Urbahns' development of "third campist" positions that the Soviet Union was no longer a workers' state.Trotsky, Leon An Open Letter to All Members of the Leninbund (1933)
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