Aim: Toevaluate the retention of glass fiber dental post embedded in three different types of dual cure core materials namely, Luxacore Z, Compcore AF and Corecem. Materials and method:Ninety prefabricated fiber reinforced posts (D.T. light Posts) were taken and divided into three groups. The post surface was treated with silane coupling agent (Monobond-S, Ivoclar-VivadentSchaan, Liechtenstein) as per the manufacturer’s instructions. Bonding agent (Prime and Bond-Dentsply, U.S.A.) was applied on post surface with brush and cured according to manufacturer’s instructions.Each of the three core build-up materials were manipulated according to the respective manufacturer’s instructions and a core of 4 mm core height was prepared by using prefabricated matrix. Thirty specimens for each core build up materials were made. The specimens were divided into the following groups each containing 30 samples (Group I - Luxacore Z, Group II-Compcore AF, Group III – Corecem). The data wasanalyzed using SPSS (version 20). One Way ANOVA and Tukey's post hoc multiple comparison testwere applied for statistical analysis. Result: In the present study, Luxacore Z showed greater retention value with glass fiber post (15.64 MPa) in comparison to Compcore AF (14.99 MPa) and Corecem (14.33 MPa) core resins. Conclusion: The retentive strength of dual cure resin Luxacore Z to the glass fiber post is significantly higher than dual cure resin Compcore AF and Corecem.