| SPSymbient Product Development LLC | Carlsbad | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| SPSynthetic Proteomics INC | Carlsbad | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SBSyntron Bioresearch INC | Carlsbad | CA | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| TETamarack Enterprises, Inc. | Carlsbad | CA | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| TSTau Systems INC | Carlsbad | CA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| TMTaylor Made Golf CO | Carlsbad | CA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| TITeague's Iron and Metal LLC | Carlsbad | NM | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| TKTessenderlo Kerley Services | Carlsbad | NM | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| TSThunder Stone Quarry LLC | Carlsbad | NM | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TIToynami, Inc. | Carlsbad | CA | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |
| TITranschem INC | Carlsbad | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TCTurman Commercial Painters | Carlsbad | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
| TBTyra Biosciences | Carlsbad | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| VIVertiflex, INC | Carlsbad | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| VIViasat INC | Carlsbad | CA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| VIViasat, INC. | Carlsbad | CA | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| ZZense-life | Carlsbad | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| ZLZuza LLC | Carlsbad | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
