A box truck, also known as a cube truck, cube van, bob truck, box van, or straight truck, is a truck with a cuboid-shaped cargo area.

They usually range in size 4 to 7 m in length, with smaller or larger sizes existing but being rare in North America. They usually have a garage door-like rear door that rolls up. On some box trucks, the cargo area is accessible from the cab through a small door.

Box trucks are usually used by companies that need to haul appliances or furniture. They are also used as moving trucks which can be rented from companies such as U-Haul or Ryder.

In North America, Ford, Dodge and Chevrolet/GMC have historically been the most common manufacturers of conventional cab/chassis to which various producers (called body builders or upfitters) attach the box that holds cargo. Isuzu, Mitsubishi Fuso and UD/Nissan Diesel have been the most common marketers of cabover-type medium duty cab/chassis used as platforms for box trucks. In North America, these trucks can range from Class 3 to Class 7 (12,500 lb. to 33,000 lb. gross vehicle weight rating, or GVWR). As of July 31, 2009, however, GM closed the plant that manufactured its medium duty commercial trucks, and announced it was withdrawing from the medium-duty commercial truck market. The same GM plant also manufactured Isuzu class 6 and class 7 models and Isuzu class 3 gasoline-engine cabover models. Isuzu's plans for acquisition or manufacture of the affected models have not been announced, as of January 2010.

Box (plural boxes) describes a variety of containers and receptacles for permanent use as storage, or for temporary use often for transporting contents. The word derives from the Greek πύξος (puxos), "box, boxwood".

Boxes may be made of durable materials such as wood or metal, or of corrugated fiberboard, paperboard, or other non-durable materials. The size may vary from very small (e.g., a matchbox) to the size of a large appliance. A corrugated box is a very common shipping container. When no specific shape is described, a box of rectangular cross-section with all sides flat may be expected, but a box may have a horizontal cross section that is square, elongated, round or oval; sloped or domed top surfaces, or non-vertical sides.

A decorative or storage box may be opened by raising, pulling, sliding or removing the lid, which may be hinged and/or fastened by a catch, clasp, or lock.

Several types of boxes are used in packaging and storage.

Depending on locale and specific usage, the terms carton and box are sometimes used interchangeably.