A porteur bicycle is a kind of cargo bicycle designed for carrying cargo loads on a platform rack attached to the fork. Porteur bicycles are similar to butcher's bikes, baker's bikes, low gravity bicycles and delibikes, but they include design differences which make them a distinct category. This is the simplest form of dedicated cargo bicycle and is or has been common over most of the world. The first porteurs were used by newspaper couriers of Paris, who would typically carry up to 50 kilograms of newspapers on the front rack. Other cargo, such as wine, was also distributed by such bicycles.
Frame geometry of porteur bicycles is differentiated from that of other bicycles by dramatically decreased geometric trail. This decreased trail is achieved primarily by increased fork offset.