Cylinder (disambiguation)

A cylinder is a basic curvilinear geometric shape.

Cylinder may also refer to:


 * Cylinder (algebra), the Cartesian product of a set with its superset
 * Cylinder (disk drive), a division of data in a disk drive
 * Cylinder (engine), the space in which a piston travels in an engine
 * Cylinder (firearms), the rotating part of a revolver containing multiple chambers
 * Cylinder (gastropod), a subgenus of sea snails
 * Cylinder (locomotive), the components that convert steam power into motion
 * Cylinder (optometry)
 * Cylinder, Iowa, a city in Palo Alto County, Iowa, United States
 * Cylinder set, a natural basic set in product spaces
 * Cylinder set measure, a way to generate a measure over product spaces
 * Gas cylinder, a high-strength container for storing gases at high pressure
 * Phonograph cylinder, the earliest commercial medium for recording and reproducing sound