T itanium alloys are among the most important advanced materials and are key to improved performance in both aerospace and terrestrial systems, due to an excellent combination of specific mechanical properties and outstanding corrosion behavior[1]. However, widespread use is constrained by the high cost of titanium alloys compared to alternative materials[1]. The high cost of producing conventional titanium components has spurred numerous investigations into potentially lower cost processes, including powder metallurgy (PM) near-net-shape techniques such as additive manufacturing (AM)[1]. This article reviews AM with an emphasis on the “work horse” titanium alloy, Ti-6Al-4V. AM is receiving significant attention from numerous organizations including the U.S. Navy, as it envisions use aboard carriers with parts able to be rapidly fabricated for immediate use by battle groups[2]. Various approaches to AM, along with examples of components made by different AM processes, are presented. The microstructures and mechanical properties of Ti-6Al-4V produced by AM are also discussed and compare well with cast and wrought products. Finally, the economic advantages of AM compared to conventional processing are presented.