| RGRamon Galvan & Gerardo Galvan, a Partnership | San Marcos | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| RERap Engineering INC | San Marcos | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RNRespect Nutrition LLC | San Marcos | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RMRoger Manning, Jr. | San Marcos | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| RHRupes Hydraulics Rupe CORP | San Marcos | CA | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| RHRustic Home | San Marcos | CA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| SESchindler Elevator | San Marcos | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| SPSienna Print & Design INC Dba Alphagraphics 554 | San Marcos | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| SCSo Cal Trike Center | San Marcos | CA | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| SSSolterra Summit Holdings LLC | San Marcos | CA | Beverage and Tobacco Product Manufacturing312130 | — | ◇ UNVERIFIED |
| SWSuez Wts | San Marcos | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SRSuperior Ready Mix Concrete LP | San Marcos | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TFThe Fountain People, INC. | San Marcos | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| TMThe Mackinnon Group, INC. | San Marcos | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TTThe Tjx Companies, INC. | San Marcos | CA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| TOThis Old Shop | San Marcos | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| TSTorres Stone Design, INC. | San Marcos | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TCTravis Crouse | San Marcos | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| TCTri-m CO | San Marcos | CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| TSTxm - San Marcos Ready Mix | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| VWVallecitos Water District | San Marcos | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| WWWalker Wood Products INC | San Marcos | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| WWWaterjet West LLC | San Marcos | CA | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| WPWelcare Pharmacy INC | San Marcos | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| W1Willies 1 Day Cleaners | San Marcos | CA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| YRYarrington Road Materials LP | San Marcos | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| YDYong Dental Lab and Medical Equipment INC | San Marcos | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| ZPZenoff Products | San Marcos | CA | Computer and Electronic Product Manufacturing334517 | — | ◇ UNVERIFIED |
