| SFStandard Filter Corporation | Oceanside | CA | Textile Product Mills314910 | 20-99 | ◐ LIKELY ACTIVE |
| S5Store 576 | Oceanside | CA | Food Manufacturing311812 | 20-99 | ◐ LIKELY ACTIVE |
| SFSwan & Fox LLC | Oceanside | CA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TLTastyrounds LLC | Oceanside | CA | Food Manufacturing311911 | — | ▲ REPORTED CLOSED |
| TETcbg Enterprises | Oceanside | CA | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| TTrimco | Oceanside | CA | Fabricated Metal Product Manufacturing332510 | 20-99 | ◐ LIKELY ACTIVE |
| TATurbine Aviation INC | Oceanside | CA | Transportation Equipment Manufacturing336413 | — | ▲ REPORTED CLOSED |
| UOUSPH - Oceanside Genentech | Oceanside | CA | Chemical Manufacturing325414 | 500+ | ◐ LIKELY ACTIVE |
| WWinegreeting.com | Oceanside | CA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| GSGlobal Surf Products, INC | Oceanside | CA | Miscellaneous Manufacturing339920 | 1-19 | ◇ UNVERIFIED |
| KCKapan-kent CO INC | Oceanside | CA | Miscellaneous Manufacturing339999 | 20-99 | ◇ UNVERIFIED |
| KKKapan Kent Company INC | Oceanside | CA | Nonmetallic Mineral Product Manufacturing327215 | 1-19 | ◇ UNVERIFIED |
| LILonolife Inc | Oceanside | CA | Food Manufacturing311999 | 1-19 | ◇ UNVERIFIED |
| MIMtm Industrial | Oceanside | CA | Primary Metal Manufacturing331110 | 1-19 | ◇ UNVERIFIED |
| 1R1339 Rocky Point LLC | Oceanside | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| 1F14401 Franklin Ave LLC | Oceanside | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| 3I3045 Industry LLC | Oceanside | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| 3I3045 Industry LLC | Oceanside | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| 3P3225 Production, LLC | Oceanside | CA | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| 3P3242 Production Avenue LLc | Oceanside | CA | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| ABAcuity Brands - Alight | Oceanside | CA | Electrical Equipment, Appliance & Component Manufacturing335132 | — | ◇ UNVERIFIED |
| ASAgri Service INC | Oceanside | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| AEAkerson Enterprises LLC | Oceanside | CA | Apparel Manufacturing315240 | — | ◇ UNVERIFIED |
| ATAlpha Technics | Oceanside | CA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| ARAlphonzo Rawls Designs, INC. | Oceanside | CA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| ACAm Chemicals LLC | Oceanside | CA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| ALAmerican Laser Fabrication Inc. | Oceanside | CA | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| ALArtience Lighting INC | Oceanside | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| ABArtisan Breads of California LLC | Oceanside | CA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| ADArtisan Designs INC | Oceanside | CA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| ARAtomica Research & Development INC | Oceanside | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| BMBellingham Marine Industries INC. | Oceanside | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| BRBoral Roofing, LLC | Oceanside | CA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CLCabanyco LLC | Oceanside | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| CCCalportland Company - Oceanside | Oceanside | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CDCarrillo Design Center | Oceanside | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CLCbx LLC | Oceanside | CA | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| COCity of Oceanside | Oceanside | CA | Miscellaneous Manufacturing339940 | — | ◇ UNVERIFIED |
| CCClayton Clark | Oceanside | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CCClinicon Corporation | Oceanside | CA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| COCounty of San Diego - Department of Parks and Recreation | Oceanside | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| CCCybionex Corporation | Oceanside | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| DPDalenzie Professionally Built Torque Converters | Oceanside | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| DMDecorative Metal Coatings | Oceanside | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DSDecorative Services | Oceanside | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| DSDecorative Services INC | Oceanside | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| DWDistrict Welding co., LLC | Oceanside | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| DSDs Services Dba Sparkletts Drinking Water | Oceanside | CA | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| EBEco Building Products INC | Oceanside | CA | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| EMEdge-tech Manufacturing INC | Oceanside | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
