The air quality of our planet is gradually decreasing due to many factors such as industrial activities and population growth. The accumulation of pollutants such as particulate matter (PM), sulfur dioxide (SO2), nitrogen oxides (NOx), harmful bacteria, microbes, and dust in the air poses serious dangers to the health of humans and other living things. Exposure to particles of 2.5 µm size causes a wide variety of diseases and premature deaths, especially in the respiratory and circulatory systems of living beings. External pollutants in the air are transported into indoor spaces through the leakage and ventilation system, and these significantly adversely affect indoor air quality. Due to the epidemic diseases we have experienced in recent years, the importance of indoor air quality and therefore the importance of filtration in heating, ventilation and air conditioning systems has increased. Traditional air filtration materials consist of non-woven surface structures produced from synthetic fibers. Since synthetic fibers originating from petroleum are not biodegradable and environmentally friendly, the use of natural fibers in the production of filtration materials has increased. The methods used in the production of traditional air filtration materials are not sufficient to capture particles smaller than 2.5 µm in size. For this reason, the use of nanofiber surfaces in filter materials attracts attention. The main objective of this project is to obtain surfaces in different forms from chicken feathers, which is a by-product of the poultry industry and most of which is waste, and to use composite structures to be formed from these surfaces as air filter material. Millions of tons of chicken feathers are wasted worldwide every year and most of this waste is disposed of by methods such as incineration and burial. The disposal of these wastes by these methods causes many different environmental problems such as air, soil and water pollution. Accordingly, it is environmentally and economically important to develop efficient and beneficial processes to utilize these resources and convert waste feathers into new materials. Within the scope of the presented project, nonwoven surfaces will be obtained from chicken feather fibers by different methods. As a result of the studies, it is predicted that the unique fiber structure of chicken feathers will increase the filtration efficiency of these surfaces. In addition, the fact that the amount of PM2.5 in the air has reached serious dimensions in our country, as in many countries, has made it compulsory to use nanofiber structures in the filter material to be developed. Therefore, it is aimed to produce nanofiber surfaces by obtaining keratin from chicken feathers. By combining these surfaces to be obtained from chicken feathers, composite filter materials with high filtration efficiency and low air resistance will be developed. This project will have socio-economic contributions to the industrialization of chicken feathers, which are the wastes of the chicken meat industry, which is a serious production in our country, to the economy and to the protection of the environment, even though it has been proven to have its own unique valuable qualities. The project will enable the production of a unique and innovative filtration material from chicken feathers on an industrial scale for the first time. The composite structures to be formed by combining nanofibers and nonwoven surfaces obtained from chicken feather fibers will contribute both to textile science in terms of the properties of the structures to be developed and to textile technology in terms of the process to be developed. The successful completion of the project will encourage the use of chicken feathers and bring new innovative and original projects. Keywords: Chicken feathers, chicken feather fibers, air filter material, nonwovens, composite structures