Preform

Preform may refer to:


 * Preform, a piece of glass used to draw an optical fiber
 * Preform, a piece of polyethylene terephthalate test tube shaped form blown into a completed bottle
 * Preform, an incomplete and unused basic form of a stone tool in lithic reduction
 * Preform, a specially designed shape of solder
 * Preform, a high quality, precision metal stamping used for a variety of brazing and joining applications
 * PreForm, a a software package from 3D printing technology company Formlabs