| SISolan Industries LLC | Tucson | AZ | Transportation Equipment Manufacturing336310 | — | ◇ UNVERIFIED |
| SCSonoran Capital Group, INC. | Tucson | AZ | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| SESparkman Enterprises LLC | Tucson | AZ | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| SSS. Silverberg & Sons | Tucson | AZ | Miscellaneous Manufacturing339911 | — | ◇ UNVERIFIED |
| SSStarry Sky, LLC | Tucson | AZ | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| SIStronggo Industries LLC | Tucson | AZ | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SSSunstate Sweeping, L.l.c. | Tucson | AZ | Transportation Equipment Manufacturing336112 | — | ◇ UNVERIFIED |
| SSSwitchgear Solutions, INC. | Tucson | AZ | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| SSSWJ Signs LLC | Tucson | AZ | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| TET3 Engineered Products INC | Tucson | AZ | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TTTaylor Tack & Feed, LLC | Tucson | AZ | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| TPTeam Pb, LLC | Tucson | AZ | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TBThe Barbier Group, LLC | Tucson | AZ | Electrical Equipment, Appliance & Component Manufacturing335132 | — | ◇ UNVERIFIED |
| TMThunder Mountain Metal Sales LLC | Tucson | AZ | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| TDTortillas Don Chavas | Tucson | AZ | Food Manufacturing311830 | — | ◇ UNVERIFIED |
| TMTrimac Metal Arts, LLC | Tucson | AZ | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| TGTrinity Granite & Marble, L.l.c. | Tucson | AZ | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| TATucson Awning & Screen, L.l.c. | Tucson | AZ | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| TCTucson Container CORP | Tucson | AZ | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| TRTucson Rolling Shutters, INC. | Tucson | AZ | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| TCTylers Coffee, LLC | Tucson | AZ | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| UCUniversal Custom Display | Tucson | AZ | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| WLWalbro LLC | Tucson | AZ | Machinery Manufacturing333618 | — | ◇ UNVERIFIED |
| WTWater Tec of Tucson, INC. | Tucson | AZ | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| WMWeinell Machine INC. | Tucson | AZ | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| WWWeir Wales | Tucson | AZ | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| WWWeller's Wildlife Studio, INC. | Tucson | AZ | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WEWhite Eagle Machine Shop | Tucson | AZ | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| WCWoodcrafters Cabinet and Design | Tucson | AZ | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| XLXojourn, LLC | Tucson | AZ | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
