Turkey is known to be one of the oldest nut producing countries. It holds first place of the world hazelnut production, third place in walnut, chestnut and pistachio and seventh place almond. Hazelnuts have more than 60 percent share of the total Turkish nut production followed by walnuts, chestnuts, almonds and pistachios. Productivity of hazelnuts, chestnuts, almonds and pistachios has increased while walnuts productivity has decreased in the last 15 years. Hazelnut, chestnut and pistachio production are concentrated in Black Sea, West Anatolia and East Anatolia Regions, respectively, while walnut and almond production are spread out all over the country. Turkey is the largest hazelnut world producer and exporter, it has recently increased its production and export capacity substantially while government involvement in this market has declined gradually in the last 15 years. Turkey exports hazelnuts mainly to Germany and other European countries. Turkish hazelnuts have been also exported substantial amount to major hazelnut-producing countries. The restriction of hazelnut planted areas, the increasing market share in the domestic and foreign markets and the export fund level of hazelnut to solve the excess supply problem in recent years are considered. Important current issues related to the hazelnut market. Walnuts, chestnuts and almonds are produced for mainly domestic consumption with a very small amount or exports. Pistachio production increased while the amount of exports decreased but additional increases are expected in pistachio production and hence exports, as a result of GAP project providing irrigated land where pistachio is produced.