| CCfan | San Marcos | TX | Transportation Equipment Manufacturing336413 | 500+ | ◐ LIKELY ACTIVE |
| HEHeldenfels Enterprises, INC. | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327310 | 100-499 | ◐ LIKELY ACTIVE |
| CPCapital Precast | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327390 | 100-499 | ◐ LIKELY ACTIVE |
| CCCorvac Composites, LLC. | San Marcos | TX | Plastics and Rubber Products Manufacturing326121 | 20-99 | ◐ LIKELY ACTIVE |
| EPEpic Piping | San Marcos | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| SMSenza Maestro Spirits | San Marcos | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| IBIon Biosciences at Star Park | San Marcos | TX | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| ASAlvarado Solutions LLC | San Marcos | TX | Fabricated Metal Product Manufacturing332510 | — | ◐ LIKELY ACTIVE |
| CACamulus Armorers Limited Liability CO | San Marcos | TX | Electrical Equipment, Appliance & Component Manufacturing335991 | — | ◐ LIKELY ACTIVE |
| GRGeist Robotics, INC. | San Marcos | TX | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| IRIngram Readymix, Inc.-san Marcos #13 | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KSKamps San Marcos | San Marcos | TX | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| MSM&q Smtx | San Marcos | TX | Plastics and Rubber Products Manufacturing326111 | 20-99 | ◐ LIKELY ACTIVE |
| PVParadis Vineyard and Winery, LLC | San Marcos | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
Playcore Wisconsin, Inc., dba GFRC | San Marcos | TX | Miscellaneous Manufacturing339920 | 1-19 | ◐ LIKELY ACTIVE |
| RIRealStuff, Inc dba Yellowbird Food | San Marcos | TX | Food Manufacturing311941 | 20-99 | ◐ LIKELY ACTIVE |
| RHRuby Heels Wine Shoppe | San Marcos | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SPSATP Pavestone | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| TDTideborn Defense, LLC | San Marcos | TX | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |