Pin (disambiguation)

A pin is a device used for fastening objects or material together.

Pin or PIN may also refer to:

Awards, brooches, or fasteners

Award pin, a symbol of achievement or recognition
Bobby pin or kirby grip or hair grip, a hairpin
Clevis pin, a three-piece fastener system consisting of a clevis, clevis pin, and tang
Collar pin, a piece of men's jewelry, which holds the two ends of a dress shirt collar together
Drawing pin or thumbtack, a short nail or pin used to fasten items to a wall or board for display
Hairpin cotter, also known as an R-clip, R-pin, R-key, bridge pin, hitch pin or spring cotter pin; a fastener resembling the shape of the letter "R"
Lapel pin, a small pin worn on clothing, often worn on the lapel of a jacket
Safety pin, a variation of the regular pin which includes a simple spring mechanism and a clasp
Split pin or cotter pin, a metal fastener with two tines that are bent during installation, similar to a staple or rivet

Personal identification number, an alphanumeric password used to access a secured system
PIN, a Dutch debit card by Currence
An image on Pinterest
Blackberry PIN, an eight-character hexadecimal identification number assigned to each BlackBerry device
PIN diode, a type of semiconductor diode
Lead (electronics), a short wire on an electrical device

Pin (amateur wrestling), holding an opponent down
Pin (professional wrestling), wrestling move
Pin (bridge), a maneuver in the game of bridge
Pin (chess), a situation in which a defending piece cannot move without exposing a more valuable defending piece
Bowling pin, the target of the bowling ball in various bowling games
Gabriele Pin (born 1962), Italian footballer

Pin, Haute-Saône, Haute-Saône, France
Police Information Notice, notices to people against whom claims of harassment have been made
Postal Index Number, a six digit code used by India Post
PIN Group, a German postal company
People in Need (Czech Republic), a Czech nonprofit, non-governmental organization
Paleontological Institute, Russian Academy of Sciences, Moscow, Russia
PIN proteins, integral membrane proteins that transport the phytohormone auxin across membranes
Progressive inflammatory neuropathy, a disease among slaughterhouse workers in Minnesota, 2008
Prostatic intraepithelial neoplasia, an abnormality of prostatic glands
Center pin, on railway vehicles
Dowel or dowel pins, a solid cylindrical rod, usually made from wood, plastic, or meta
Pin, half a firkin in English brewery cask units