13th International Conference on Wireless, Mobile Network and Applications (WiMoA 2021) is dedicated to address the challenges in the areas of wireless, mobile network issues & its applications. The Conference looks for significant contributions to the Wireless & Mobile computing in theoretical and practical aspects. The Wireless & Mobile computing domain emerges from the integration among Personal Computing, Networks, Communication Technologies, Cellular Technology and the Internet Technology. The modern applications are emerging in the area of Mobile ad hoc networks and Sensor Networks. This Conference is intended to cover contributions in both the design and analysis in the context of mobile, wireless, ad-hoc and sensor networks. The goal of this Conference is to bring together researchers and practitioners from academia and industry to focus on advanced wireless & Mobile computing concepts and establishing new collaborations in these areas.