Canister

Canister may refer to:
 * Any container that is roughly cylindrical in shape
 * A container for 35mm movie film or 35mm photo film for use in cameras
 * Pods used for parachute supply drops
 * Gas containers used for riot control
 * A perforated metal box which is part of a gas mask
 * The carbon dioxide scrubber of a rebreather
 * The filter which absorbs gasoline vapour in a car tank
 * A cylindrical bell worn by sheep, that was traditionally used in Sussex, England, especially on the South Downs
 * Canister shot, a type of artillery round used in warfare as anti-personnel ammunition