Pen (disambiguation)

A pen is a writing instrument which applies ink to a surface, usually paper.

Pen may also refer to:

Animals and animal husbandry

 * Pen (enclosure), enclosure for holding animals
 * Pen, an adult female swan
 * Gladius (cephalopod), or pen, a hard internal bodypart found in certain cephalopods
 * Pen (Jamaican cattle farm), a historic livestock farm on the Island of Jamaica
 * Sea pen, an order of Cnidarians in the class Octocorallia

People

 * Jan Pen (1921–2010), Dutch economist
 * Luke Pen (1960–2002), Australian biologist and environmental scientist
 * Ue-Li Pen (born 1967), Canadian astrophysicist
 * Yehuda Pen (1854–1937), Lithuanian Jewish painter and art teacher

Other uses

 * Bullpen, an area at a baseball field where relief pitchers warm up
 * Pen, India, a place
 * Pen (play), by David Marshall Grant
 * "The Pen", an episode of Seinfeld
 * Autoinjector pen, a medical device to deliver a dose of a drug
 * Insulin pen
 * Olympus Pen, a camera
 * Submarine pen, a type of submarine base
 * T-Mobile Park, a spectator area in Seattle
 * Pen, a character who is Finn the Human’s debut in the original pilot of Adventure Time
 * Short for slave pen, an antebellum American slave jail