Isaac-Jacob Adolphe Crémieux was a French lawyer and politician who served as Minister of Justice under the Second Republic (1848) and Government of National Defense (1870–1871). Raised Jewish, he served as president of the Alliance Israélite Universelle, secured French citizenship for Algerian Jews under French rule through the Crémieux Decree (1870), and was a staunch defender of the rights of the Jews of France.

The French Second Republic, officially the French Republic, was the second republican government of France. It existed from 1848 until its dissolution in 1852.