Bladder (disambiguation)

The bladder (or urinary bladder) is an organ that collects urine for excretion in animals.

Bladder may also refer to:

Biology

 * Artificial urinary bladder, in humans
 * Gallbladder, which stores bile for digestion
 * Pig bladder, urinary bladder of a domestic pig, with many human uses
 * Swim bladder, in bony fishes, an internal organ that helps to control buoyancy (homologous to lungs)
 * Urinary bladder (Chinese medicine)

Technology

 * Air bladder effect, a special effect used in filmmaking
 * Fuel bladder, which stores fuels or other industrial liquids
 * Hydration system, sometimes known as a bladder
 * Pneumatic bladder, an old technology with many industrial applications
 * Waterskin, a traditional container for transporting water

Geography

 * Bladder Lake, a lake in Minnesota