Microfiber or microfibre refers to synthetic fibers (fiber) that measure less than one denier. The most common types of microfibers are made from polyesters, polyamides (e.g., nylon, kevlar, nomex, trogamide), and or a conjugation of polyester and polyamide.

Microfiber is used to make non-woven, woven and knitted textiles. The shape, size and combinations of synthetic fibers are selected for specific characteristics, including: softness, durability, absorption, wicking abilities, water repellency, electrodynamics, and filtering capabilities.

Microfiber is commonly used for apparel, beddng,  upholstery, industrial filters and cleaning products.