There is 118 Fiber-Optic Cable Manufacturing in the US businesses as of 2025, an increase of 3. This updated list ranks the 20 largest fiber-optic cable companies worldwide and summarizes what each vendor is best known for—core product lines, regional strengths, and typical project fit. Use it as a fast shortlist when planning new FTTH/FTTA or data-center builds. We note certifications. Corning Incorporated, founded in 1851 and headquartered in Corning, NY, employs over 58,000 professionals and records annual sales exceeding $250 million. 52 billion in 2024, and is projected to exceed $25 billion by 2030, growing at a 9. 1 Thomas has been North America's number one industrial sourcing platform for more than 125 years.