Pin (device), device used for fastening objects or material together
Brooch, a decorative item fastened on apparels;
Badge or button, a small (usually round) piece of metal or plastic with a pin attached, usually worn on clothing;
Award pin, a small piece of metal or plastic with a pin attached given as an award for some achievement;
An electric interconnection, in electronics. For example a metal wire coming out of an integrated circuit or transistor;
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Bridge pin, a vertical wire on the bridge of keyboard instruments such as the piano and harpsichord that is used to control the string resonances;
Pin, Haute-Saône, a commune of the Haute-Saône département, in France;
Pin..., a 1988 cult horror movie ;
Pin (song), a song by the Yeah Yeah Yeahs from their debut album, Fever to Tell (2003).;