Today, Network sustainability has become capital in both academia and industries present all over the globe, which has generated a solution for the impact of optimization in mobile communication networks. Recently, the evolving advances in Evolutionary Computing technologies including swarm intelligence algorithms and other evolutionary algorithm paradigms are emerging as widely accepted descriptors for mobile sustainable networks virtualization, optimization, and automation. To deal with the emerging impacts on mobile communication networks, The 3rd International Conference on Evolutionary Computing and Mobile Sustainable Networks [ICECMSN 2023] conceives an innovative research platform for soliciting the state-of-the research works on developing a sustainable design and their implementation in mobile networks. With the advent of evolutionary computation algorithms, ICECMSN 2023 contributes a gathering of inventive research contributions that would initiate a new perspective of mobile sustainable networks. The main aim of this international conference is to promote and reflect the recent research works in evolutionary computation technologies and mobile sustainable networks. ICECMSN 2023 has developed with a specific focus on computational intelligence and evolutionary computing that widely ranges from theoretical foundations to practical applications in enhancing the sustainability of mobile networks.