25 companies in Turkey are in the possession of 92 per cent of total exports in defence and aeronautics, 61 per cent of total R&D and 66 per cent of total defence turnover in the defence industry sector. Their net sales amount to 2.5 billion Dollars with total exports reaching 800 million Dollars. With R&D expenditures exceeding 300 million Dollars, these 25 companies provide employment opportunities to 20 thousand people. The company that stands out as the most successful one in defence industry in terms of labour productivity is FNSS Savunma Sistemleri A.Ş. (FNSS Defence Systems Co.). On the other hand, the most successful company of defence industry in terms of the category of net exports is TAI, followed by FNSS Savunma Sistemleri A.Ş., TUSAŞ Motor Sanayi A.Ş (TEI – TUSAŞ Motor Industry Co.), HAVELSAN and Nurol Makine ve Sanayi A.Ş. (Nurol Machinery and Industry Co.).