The use of organic cotton in spinning industry is common these days.Organic cotton is produced without using the agricultural chemicals and fertilizers. its spinning performance is good in industry. Organic cotton has various end used ranging from personal care items to home furnishings and even with garments of all styles an kinds. Even for kids wear organic cotton is the best recommended one. Siro spinning is a spinning method which is predicted to have profound impact on the yarn spinning industry. In siro spinning the optimal adjustment and selection of various variables are of utmost importance for the production of good quality yarn. Different mechanical variables like spindle speed, twist multiplier, and steel ring diameter are all significant parameters for yarn evenness, imperfections, hairiness and tensile properties. Thus the present study was planned to appraise the quality parameters of siro and ring spun organic yarns under these machine variables in order to achieve the best settings of these factors for getting optimum quality of yarn.