Perhaps the development of world civilization is going on along with the development of textiles. Textile fibers have been developed over many hundred years and most suitable fibers have been selected for the textile industries. Fibers have traditionally been used by humans in all cultures of the world to meet their basic requirements i.e. clothing, home, and especially technical purposes. The worldwide gradual development of textile industries meets the increasing demand of textile materials. Fiber is the first elementary raw materials of textile manufacturing. Originally it is either natural or manmade. Besides the uses of natural fibers to make apparel, there are also different types of special requirements and special applications. Man-made fibers are a must to meet these special requirements and applications. There are different types of man-made fibers from different origins. In this course we will go through the introduction, polymeric origin, chemical composition and structure, macro and microstructure, different properties of different man-made base fibers such as Viscose, Rayon, Acetate rayon, Polyester, Polyamide, Acrylic, PVA, PVC, PTFE, Carbon and Glass fibers.