Abstract: Avian Infectious Bronchitis (IB) is an acute and highly contagious respiratory disease in chickens. To detect the virus in chickens, housekeeping genes were detected by quantitative real-time PCR for the normalization. The aim of study was to identify the most stable housekeeping gene (s) in IBV infection. Five housekeeping genes including 18S rRNA, β-actin, Glyceraldehyde-3-Phosphate Dehydrogenase (GAPDH), Glucose-6-Phosphate Dehydrogenase (G6PDH) and Ubiquitin (UB) were investigated in nine tissues: trachea, thymus, liver, spleen, lungs, kidney, pancreas, proventriculus and bursa of Fabricius. The geNorm and Normfinder Software were used to calculate the stability of the candidate genes.