The 4th West Asian Symposium on Optical and Millimeter-wave Wireless Communications (WASOWC2022) is hosted at the University of Tabriz (TMU), Tabriz, Iran. It follows the successful previous events held in Tarbiat Modares University (2020), Isfahan University of Technology (2018) and Shahid Beheshti University (2019). WASOWC2022 aims to bring together researchers from academia and industry to share their latest findings in the field of optical & millimetre-wave wireless communications as part of the 5th Generation and beyond wireless netwroks. The 5rd Symposium will also include workshops, invited and keynote speakers. High quality and original technical papers are welcome to be presented at WASOWC2022.