Diether Dehm (full name Jörg-Diether Dehm-Desoi;[1] born 3 April 1950) is a German left-wing politician, musician and music manager.

[2] His father Otto Dehm was a mechanic, and played football for FSV Frankfurt, and his mother Inge (née Schulz) was a clerk.

[16] In 1970–1971, Dehm was recruited by the East German Stasi secret service, and both he and his wife Christa Desoi became unofficial collaborators (IMs).

[4] According to Stasi files, Dehm also reported on, among other subjects, activities of the SPD and certain West German artists, and goings-on at the University of Frankfurt.

[2] Since 2010, he has chaired the Bundesarbeitsgemeinschaft Linke Unternehmerinnen und Unternehmer, a Left Party group representing entrepreneurs,[19] and has advocated on behalf of businesspeople.