Aim: The aim of this study was to evaluate and compare the microleakage of various glass-ionomer restorative materials. Materials and Methods: A sample size of 60 noncarious permanent teeth was taken for the study. Standardized Class V cavities were made on the buccal surface of the tooth. Samples were divided into three groups as follows: Groups 1, 2, and 3 containing 20 teeth in each group and restored with GC Fuji II, GC Fuji IX GP, and GC Fuji II LC, respectively. Samples were then subjected to thermocycling and later on immersed in methylene blue dye for microleakage assessment. The microleakage assessment was done using stereomicroscope (Leise company). Data collected were statistically analyzed. Results: GC Fuji II exhibited maximum microleakage, followed by GC Fuji IX GP and was minimum in GC Fuji II LC. Conclusion: GC Fuji II LC showed least microleakage and thus can be recommended as the restorative material of choice for pediatric patients.