Background: Fungal rhinosinusitis is one of the important healthcare problems and its incidence and prevalence Abstract is increasing over the past three decades. It affects approximately 20% of the population at some time of their lives. It occurs in both acute and chronic forms. Early and effective treatment based on the knowledge of causative microorganisms can ensure prompt clinical recovery and possible complications can thus be avoided. Objectives: To study the demographic and microbiological profile of rhinosinusitis. Materials and Methods: Clinically diagnosed cases of rhinosinusitis were enrolled in the study and detailed clinical history was taken. Samples like nasal mucosa,crusts, scrapings / excised nasal polyps and biopsy were collected . The specimens were processed for fungal culture. Isolates were identified as per standard protocols. Results: A total of 50 patients clinically diagnosed with rhinosinusitis were enrolled in our study out of which 28(56%) were males. Most common presenting complaint was nasal obstruction (92%) followed by nasal discharge (78%). Overall KOH positivity in our study was 72% and fungal culture positivity was 40%. Most common fungal isolate was A.flavus followed by Mucor spp. Conclusion: Continuous and periodic evaluation of microbiological pattern of isolates is necessary to decrease the potential risk of complications by early institution of appropriate treatment. Keywords: Fungal rhinosinusitis, Acute rhinosinusitis, Chronic rhinosinusitis, Aspergillus.