Consignor definition: the shipper who transmits goods to a consignee, defining the originator's role in consignment law. Consignor denotes the party who transmits or sends goods to another, functioning as the shipper in a consignment relationship; the originator or sender of goods dispatched to a consignee, identifying the role that initiates movement of goods and underpins responsibilities for shipment, documentation and transfer of custody in consignment operations.