Background: The evolution of all-ceramic systems for dental restorations has been remarkable in last three decades. The present study evaluated the biaxial flexural strength of dental ceramic specimens after etching with 9 % HF acid. Materials & Methods: The present study was conducted on 30 glass ceramic specimens were fabricated from three commercially available leucite based core ceramic material (1) Esthetic Empress, (2) Cergo and (3) Performance Plus. Thirty ceramic disc specimens were fabricated for each group from wax patterns. Biaxial flexural strength of specimens was tested. Results: The mean biaxial flexural strength in group I was 161.3 MPa, in group II was 152.7 MPA and in group III was 126.2 MPa. The difference was significant (P< 0.05). Conclusion: Authors found that maximum Biaxial flexural strength was found with Esthetic Empress followed by Cergo and Performance Plus. Key words: Biaxial flexural strength, Cergo, Performance Plus