| Marcel Rosenberg | |
| Birth Place: | Warsaw, Congress Poland, Russian Empire |
| Death Place: | Russian SFSR, Soviet Union |
| Nationality: | Soviet |
| Occupation: | Diplomat |
| Soviet ambassador to Spain | |
| Term: | 1936–1937 |
| Predecessor: | - |
| Successor: | Leon Gaikis |
| Party: | Communist Party of the Soviet Union |
Marcel Izrailevich Rosenberg (1896 — 5 March 1938) was a Soviet diplomat.
Rosenberg was born into the family of a Jewish trader who in 1906 emigrated from Poland with his family to Königsberg in Prussia and later to Berlin. Rosenberg was the first Soviet ambassador to Spain, he served during the Spanish Civil War. Recalled to the Soviet Union in 1937, he was soon executed during the Great Purge.[1] [2] He was succeeded in office by Leon Gaikis, who faced a similar fate.