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Natural gas is one of the cleanest forms of fossil fuels and its usage is rising since the importance of environment-friendly conversion systems has been seen. Liquefied natural gas (LNG) and pipeline technologies are two present methods for the natural gas transportation between the exporter and importer. This review presents the LNG cold utilization systems which are discussed on the applications such as separation processes, cold food storage, cryogenic carbon dioxide (CO₂) capture, power generation, etc. The minimum power consumption and flow rate are detected as 0.45 kWh/kg and 8 ton/hour, respectively for the air separation processes. Exergetic and energetic efficiencies are increased by nearly 40% of those of the conventional separation processes. In the desalination system, it is inferred that the LNG cold utilization has provided nearly 50% energy saving while 2 kg ice melt water is produced by 1 …