Background: The objective of this research was to evaluate and compare the shear bond strengths of various glass ionomer cements when applied to the dentin of primary teeth. Material and methods: A total of one hundred primary molars exhibiting intact buccal or lingual surfaces constituted the sample for this study. The samples were randomly divided into three groups (A, B, and C), which were restored sequentially with type II conventional glass ionomer cement (GIC), type II light-cured (LC) GIC, and type IX GIC. To replicate oral conditions, thermal cycling was conducted. The shear bond strength was evaluated using an Instron Universal Testing Machine after a 24-hour period, with a crosshead speed set at 0.5 mm/min until failure occurred. The data collected were compiled and analyzed statistically. Results: The average bond strengths of glass ionomer cement (GIC) for groups A, B, and C were recorded as 3.246, 6.896, and 4.102, respectively. Conclusion: Type II light cure GIC displayed the greatest bond strength amongst all the variants. Keywords: shear bond strength, GIC, cements, dentin, primary teeth