The SNCF Class Z 5600 is a double-deck electric multiple unit trainset that is operated by SNCF on line C of the Réseau Express Régional (RER), a hybrid suburban commuter and rapid transit system serving Paris and its Île-de-France suburbs and the TER Bourgogne-Franche-Comté regional rail system. The 52 trainsets were built by a consortium of , TCF, and TCO between 1982 and 1985.