The name of Clichy-sous-Bois comes from Roman Cleppius, seventh century Clippiacum superius, twelfth century Clichiacum.
On 20 May 1869, a part of the territory of Clichy-sous-Bois was detached and merged with a part of the territory of Livry-Gargan and a small part of the territory of Gagny to create the commune of Le Raincy.