Gruppe SPUR was an artistic collaboration formed by the German painters Heimrad Prem, Helmut Sturm, and Hans-Peter Zimmer, and the sculptor Lothar Fischer in 1957. They published a journal of the same name Spur.

Spur was subject to prosecution and was convicted "in the name of moral order".

The Spur group joined and collaborated with the Situationist International, a restricted group of international revolutionaries, between 1959 and 1961. After a series of core divergences during 1960–1, the Spur members were officially excluded from the SI on February 10, 1962. The events that led to the exclusion were: during the Fourth SI Conference in London (December 1960), in a discussion about the political nature of the SI, Spur group disagreed with the core situationist stance of counting on a revolutionary proletariat; the accusation that their activities were based on a "systematic misunderstanding of situationist theses"; the fact that at least one Spur member, Lothar Fischer, and possibly the rest of the group, were not actually understanding and/or agreeing with the situationist ideas, but were just using the SI to get success in the art market; and the betrayal of a common agreement on the Spur and SI publications. The exclusion was the recognition that the Spur group's "principles, methods and goals" were significantly in contrast with those of the SI. This split however was not a declaration of hostilities, as in other cases of SI exclusions. A few months after the exclusion, in the context of Judicial prosecution against the group by the German state, Debord expressed his esteem to the Spur group, calling it the only significant artistic group in Germany since WW2, and at the level of the avant-gardes in other countries.

The SPUR artists met first at the Academy of Fine Arts Munich in Munich, Germany. They formed the group in 1957, which lasted until 1965.

Guy Debord remarked that while between 1920 and 1933 "Germany incontestably had the highest rank in the elaboration of art and, more generally, the culture of our era", from the post-war era to 1960, "Germany has been characterized by a total cultural void and by the dullest conformism". The Spur journal was a flourishing exception to such void and conformism, as it was, for the first time in decades, an artistic group that manifested a certain freedom of investigation, and as an "extremely worrisome symptom", this group was almost immediately the object of police and juridical persecutions. Helmet Sturim, Dieter Kunzelmann, Heimrad Prem and H.P. Zimmer each received 5 months in prison.

The Spur group was the first German group after the war to reappear on the international plane, to make itself recognized as an equal by the cultural avant-garde of several different countries, in the real artistic experiments of today; whereas the artists and intellectuals currently honored in Germany are only retarded and timid imitators of imported, old ideas.

Debord noted that Western Europe and the Scandinavian countries, had another level of intellectual tolerance, that such a trial was, at that moment, unthinkable in Paris or Copenhagen. That clumsy affair had already harmed the reputation of the Federal German Republic. Debord asserted that the pretext by which the Spur group was brought to trial, was "to make the Spur group, and all those who wish to pursue the same route, succumb to the ambient conformism." Debord ridiculed that trial to the prosecutions of Baudelaire and Flaubert for pornography and immorality in the 19th century France:

For a very long time [thereafter], one could only refer to these [French] judgments as evidence of the scandalous imbecility of the judges. It is necessary to think of them today. Before history, artistic liberty always wins its trials.