Objective: The aim of this study was evaluate the shear bond strength between zirconia based restorations and two different intraoral composite repair systems. Materials and method: A total of 30 all ceramic disc samples were constructed. They were classified into three main groups (Ӏ, ӀӀ and ӀӀӀ ) according to the type of ceramic material used.G Ӏ: samples of zirconia based ceramic.G ӀӀ Zirconia sampels veneered with Feldspathic porcelain. GӀӀӀ: Zirconia sampels veneered with Nano-fluorapetite porcelain. The samples in each main group were randomly further subdivided into two equal subgroups of 5 samples each, according to type of repair system to be tested ,Subgroup A: Ceramic repair using Clearfil repair multipurpose system. Subgroup B: Ceramic repair using Cimara repair system. the samples were stored in distilled water at room temperature 37˚ C for 24 hours before shear bond strength testing to stimulated of the same oral temperature. Results: show that the Zirconia sampels veneered with Nano-fluorapetite porcelain showed highest bond strength regarding ceramic type. Cimara showed statistically significantly higher mean shear bond strength than ClearFil. Conclusion: The shear bond strength of ceramic/ repair composite used was significantly different depending on microstructure, composition and properties of the ceramic as well as different surface treatments of the ceramic repair systems.