The Upstate SC Alliance, a public/private regional economic development organization, has compiled a list of the largest corporate headquarters in the 10-county region.
The corporations listed below have divisional, regional, North American, national and/or international headquarters within the area.
| Company | Employee Range | Line of Business | Type of Headquarters |
| BMW | Over 5,000 | Automobile manufacturer | North American |
| Michelin North America | Over 5,000 | Tires for every type of vehicle. | North American |
| Milliken & Company | Over 5,000 | Textiles, floor coverings, performance materials and specialty chemicals | International |
| GE Power | 2,501-5,000 | Gas turbine manufacturing plant and off-grid gas turbine validation facility as well as on-site inspection, repair and engineering | Divisional |
| AFL | 1,001-2,500 | Electronic components and systems, wiring and cables | International |
| American Services Inc. | 1,001-2,500 | Multi-faceted provider for security, staffing and janitorial services | National |
| Draexlmaier Automotive of America LLC | 1,001-2,500 | Automotive interior and plastic components | North American |
| Fluor Corp. | 1,001-2,500 | Engineering services | Regional |
| SAGE Automotive Interiors | 1,001-2,500 | Automotive bodycloth and headliners | International |
| Spectrum | 1,001-2,500 | Cable company and customer service center | Regional |
| SYNNEX Corp. | 1,001-2,500 | Distribution of IT products and services | National and divisional |
| Techtronic Industries Power Equipment | 1,001-2,500 | Power-driven handtools | North American and divisional |
| The Spinx Company Inc. | 1,001-2,500 | Gas stations and convenience stores | National |
| Verizon Wireless | 1,001-2,500 | Customer service and telesales divisions | Regional |
| Freightliner Custom Chassis | 501-1,000 | Chassis for RVs, walk-in vans, and commercial and school bus industries | North American and divisional |
| FUJIFILM Manufacturing USA Inc. | 501-1,000 | Platemaking services | North American |
| Hamrick Mills Inc. | 501-1,000 | Greige Woven Fabrics | National |
| Hubbell Lighting Inc. | 501-1,000 | Lighting manufacturers | International |
| Inman Mills | 501-1,000 | Advanced yarns and fabrics | National |
| JTEKT/Koyo Bearings USA | 501-1,000 | North American operational headquarters and KOYO bearing product technical center | Divisional |
| Lockheed Martin Aeronautics | 501-1,000 | Aerospace, defense, security and advanced technologies | Divisional |
| Mitsubishi Polyester Film Inc. | 501-1,000 | Unsupported plastics film and sheet | North American |
| Nutra Manufacturing Inc. | 501-1,000 | Pharmaceutical preparations | National |
| Orian Rugs | 501-1,000 | Carpets and rugs | International |
| QS/1 | 501-1,000 | Healthcare and government software and services | Divisional |
| ScanSource Inc. | 501-1,000 | Technology products and solutions | International |
| Spartanburg Steel Products Inc. | 501-1,000 | High-quality metal stampings, welded sub-assemblies and major body modules | International |
| Yokahama Industries Americas Inc. | 501-1,000 | Automotive fluid handling components | National |
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