Polymers play an important role in our everyday life. With the advent of additive manufacturing (AM) technologies, the design and manufacture of new polymer-based composite materials has experienced a significant boost. AM enables precise deposition of printable material(s) with micro scale accuracy to build up a desired structure in three dimensions in a layer-by-layer fashion. In this chapter, recent advances in the use of additive manufacturing for the design of architectured polymer-based materials is discussed. A compendium of the existing AM methods is presented, followed by an overview of applications of AM technology to fabrication of polymer-based materials with engineered inner architecture.