The study of anatomic variation of paranasal sinuses is important to understand the pathophysiology of chronic sinusitis. The rate of anatomic variations in chronic sinusitis varies according to different studies but the data in Indian population is lacking. The purpose of this study is to assess the frequency of anatomic variations in chronic sinusitis in the subset of Indian patients presented to Medical Colleges and hospitals from 2011 to 2013. A total of 90 patients were included. We found concha bullosa in 23% patients with higher incidence in inferior turbinate, nasal septal deviation in 65% patients with higher incidence on right side. 85% patients suffered from maxillary sinusitis. Haller cell was found only in 1 patient while Onodi and Agger nasi cells were not seen in any patient. To conclude, in view of the presence of these significant variations, we reemphasize the need for proper preoperative assessment in every patient in order to accomplish a safe and effective endoscopic sinus surgery. The present study is a step to provide suggestive findings to surgeons regarding various parameters involved and our contribution to the enormous work of other research workers.