Many fungal species cause infection in the nose and paranasal sinuses. Almost half of them are capable of causing systemic and CNS infections. Clinical presentation, imaging features, and treatment differ based on type of fungal sinusitis. We retrospectively reviewed 40 patients admitted and treated surgically for sinusitis in otorhinolaryngology department of the Vinayaka Missions Medical College & Hospitals, Karaikal for the last three months, April, May & June 2015. The clinical presentation, laboratory examination, radiological finding, cultre report and treatment method were analyzed. We had encountered 11 cases of fungal sinusitis, which is very much a high value of incidence than reported elsewhere (27. 5%). A combined prospective and retrospective study is currently going on in our department to determine the etiology for such increased incidence. We are hereby discussing the classification of fungal sinusitis and present 4 cases of each type.