In this study, a systematical survey on the indoor airborne fungi was carried out for one year in Manisa. Fungal samples were collected in each month with Merck MAS100 air sampler from four sampling sites. Fungal concentrations were reported as colony forming units per cubic meter of air using the MAS100 conversion unit table. Results showed that the average fungal concentration is 320 colony forming units cfu m^-3. Twenty one species belonging to 7 genera were identified according to their microscopic, macromorphological properties and through references. Penicillium, with the most abundant genera, which comprised more than 38 of the total isolated fungal species. Cladosporium were the most dominant fungal group, followed by Penicillium, Aspergillus and Alternaria.