Abstract: A cable holder for holding a flexible flat cable having a film portion, flat wires running in the film portion, a reinforcement portion where a reinforcement sheet is attached and notches formed respectively in opposite side edges of the reinforcement portion, to electrically connect the flexible flat cable to a connector. The cable holder comprises a holder body, a holder guide portion provided with the holder body, wherein an inner shape of the holder guide portion corresponds to an outer shape of the connector; and a cable holding portion having protuberances formed on the cable holding portion, for engaging respectively in the notches for holding the reinforcement portion of the flexible flat cable such that a distal end of the flexible flat cable projects into the holder guide portion.