Tessuti di Sondrio is an Italian textile manufacturer founded in 1895 in Sondrio, Lombardy, with a specialization in the production of fine wool and wool-blend woven fabrics for high-end tailoring and apparel. The mill focuses primarily on worsted and woolen constructions, including flannels and structured suiting fabrics, developed through controlled spinning, weaving, and finishing processes.

The company places strong emphasis on raw material selection, using carefully graded wool fibers to achieve specific performance characteristics such as dimensional stability, abrasion resistance, and thermal regulation. Advanced finishing techniques such as controlled milling, raising, and decatizing, are applied to enhance fabric hand, uniformity, and durability, while preserving the natural properties of the fibers.