Lightwave may refer to:
Arts, Entertainment, and Media Music Groups and labels Lightwave (band), ambient music band by Christoph Harbonnier and Christian Wittman Songs Bridged by a Lightwave, a 2020 song by Deadmau5 and Kiesza
Print Journal of Lightwave Technology, a biweekly science journal published by the Optical Society and the IEEE Photonics Society
Businesses Electric Lightwave, a subsidiary of Zayo Group Holdings Lightwave Electronics Corporation, a developer and manufacturer of diode-pumped solid-state lasers Technology Lightwave 3D, computer graphics program developed by NewTek