Abstract
Rapid prototyping (RP), also known as additive manufacturing or three-dimensional (3D) printing, is a group of evolving technologies that create 3D objects additively in a layer-by-layer manner from a predefined 3D computer model. This chapter first introduces the definition of RP, followed by a description on the basic process, classification, and representative RP systems. Finally the chapter discusses how RP can be used for processing biomaterials and suggests possible research directions in the future. This chapter intends to give readers a general view on RP of biomaterials.