合成纤维是非天然形成的聚合物，是人造纤维的一种，其主要成分为石化原料。常见成品有尼龙、奥纶等。

• 合成纤维抵抗化学药品的腐蚀能力比天然纤维好。
• 合成纤维易洗快干，但吸水性较天然纤维差。
• 大多数的合成纤维燃烧后，其纤维末端会结成球状。

Synthetic fibers or fibres are the result of extensive research by scientists to improve on naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber forming materials through spinnerets into air and water, forming a thread. Before synthetic fibers were developed, artificially manufactured fibers were made from polymers obtained from petro chemicals. These fibers are called synthetic or artificial fibers. Some fibers are manufactured from plant-derived cellulose.