A perforation is a small hole in a thin material or web.
Perforation may also refer to:
A leaf feature Perforation (oil well), a hole punched in the casing or liner of an oil well to connect it to the reservoir Perforation gauge, a term used in philately Postage stamp perforation, used to separate postage stamps Film perforations, the holes placed in the film stock during manufacturing and used for transporting Hair perforation test, a laboratory test used to help distinguish the isolates of dermatophytes Hydro-slotted perforation, a process in oil and gas drilling Organ perforation, a complete penetration of the wall of a hollow organ in the body, including: Corneal perforation Eardrum perforation Esophageal perforation Gastrointestinal perforation Nasal septum perforation Stercoral perforation Uterine perforation