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Abstract Coordination polymers (CPs), as emerging crystalline porous materials, have exhibited intriguing and promising performance in energy applications for various ion transports including proton, hydroxide, and alkali metal ions. Their advantageous features of high designabilities, stabilities, tunable pore sizes, and adjustable functional sites are beneficial for ion transports. More importantly, these features also exhibit important merits for adjusting ion concentration and enhancing the mobility of carriers in practical applications. To further explore the relationship between chemical structures and transport behaviors, we present an overview of the advancements of CPs as ion conductors in the past two decades in terms of dimensionalities. In this review, we would also discuss the fundamental strategies for enhancing energy ion transfer performance. Furthermore, the challenging issues and future prospects in this area would be also elaborated.