The article presents a novel method for rapidly growing high-quality single crystals of methylammonium lead trihalide perovskites (MAPbX₃; MA = CH₃NH₃⁺, X = Br⁻ or I⁻) using inverse temperature crystallization (ITC). This method is significantly faster than previous techniques, achieving a growth rate of up to 38 mm³ per hour for MAPbBr₃ and 20 mm³ per hour for MAPbI₃. The crystals exhibit transport properties and trap densities comparable to those of the highest quality MAPbX₃ crystals reported to date. The ITC process involves observing the inverse solubility behavior of MAPbX₃ in certain solvents at elevated temperatures, which allows for rapid crystallization. The versatility of the method enables size- and shape-controlled crystal growth, making it a major advancement in the field of perovskite single crystal growth. The study also includes detailed characterization of the crystals' optical and transport properties, demonstrating their suitability for optoelectronic applications.The article presents a novel method for rapidly growing high-quality single crystals of methylammonium lead trihalide perovskites (MAPbX₃; MA = CH₃NH₃⁺, X = Br⁻ or I⁻) using inverse temperature crystallization (ITC). This method is significantly faster than previous techniques, achieving a growth rate of up to 38 mm³ per hour for MAPbBr₃ and 20 mm³ per hour for MAPbI₃. The crystals exhibit transport properties and trap densities comparable to those of the highest quality MAPbX₃ crystals reported to date. The ITC process involves observing the inverse solubility behavior of MAPbX₃ in certain solvents at elevated temperatures, which allows for rapid crystallization. The versatility of the method enables size- and shape-controlled crystal growth, making it a major advancement in the field of perovskite single crystal growth. The study also includes detailed characterization of the crystals' optical and transport properties, demonstrating their suitability for optoelectronic applications.