| SFSchreiber Foods | West Bend | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| SFSchreiber Foods Inc. - MGB | Green Bay | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| SFScot Forge - Clinton | Clinton | WI | Fabricated Metal Product Manufacturing332111 | 100-499 | ◐ LIKELY ACTIVE |
| SIScot Industries - Muscoda | Muscoda | WI | Fabricated Metal Product Manufacturing332813 | 100-499 | ◐ LIKELY ACTIVE |
| SCSelect Custom Solutions | La Crosse | WI | Food Manufacturing311514 | 100-499 | ◐ LIKELY ACTIVE |
| SFSeneca Foods Corporation - Cumberland | Cumberland | WI | Food Manufacturing311421 | 100-499 | ◐ LIKELY ACTIVE |
| SPSharp Packaging by Pregis | Sussex | WI | Plastics and Rubber Products Manufacturing326111 | 100-499 | ◐ LIKELY ACTIVE |
| SShawano | Shawano | WI | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| SCSilgan Containers Corporate Center Drive | Oconomowoc | WI | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| SCSilgan Containers Menomonie | Menomonie | WI | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| SSSilgan Specialty Packaging | Mequon | WI | Plastics and Rubber Products Manufacturing326160 | 100-499 | ◐ LIKELY ACTIVE |
| SCSkyline Corporation | Lancaster | WI | Wood Product Manufacturing321991 | 100-499 | ◐ LIKELY ACTIVE |
| SMSouth Milwaukee Facility | South Milwaukee | WI | Machinery Manufacturing333131 | 100-499 | ◐ LIKELY ACTIVE |
| SSSpecialty Sausage | Abbotsford | WI | Food Manufacturing311612 | 100-499 | ◐ LIKELY ACTIVE |
| SRSpectrum Rst | Chippewa Falls | WI | Furniture and Related Product Manufacturing337127 | 100-499 | ◐ LIKELY ACTIVE |
| SWSPI - WN Merrill - Water St | Merrill | WI | Wood Product Manufacturing321911 | 100-499 | ◐ LIKELY ACTIVE |
| SGSpring Green CG | Spring Green | WI | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| SGSpring Green IG | Spring Green | WI | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| S2Sps 202 | Winneconne | WI | Electrical Equipment, Appliance & Component Manufacturing335313 | 100-499 | ◐ LIKELY ACTIVE |
| SMSPVG Marinette | Marinette | WI | Fabricated Metal Product Manufacturing332420 | 100-499 | ◐ LIKELY ACTIVE |
| SIStandard Iron Sumner | Hartford | WI | Fabricated Metal Product Manufacturing332313 | 100-499 | ◐ LIKELY ACTIVE |
| SStateline | Beloit | WI | Machinery Manufacturing333611 | 100-499 | ◐ LIKELY ACTIVE |
| SCSt. Cloud | St. Cloud | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| SCSt. Cloud | Saint Cloud | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| SMStecker Machine Co., Inc. | Manitowoc | WI | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| SKSteel King Industries, Inc. NL | New London | WI | Furniture and Related Product Manufacturing337215 | 100-499 | ◐ LIKELY ACTIVE |
| SNSt. Nazianz | Saint Nazianz | WI | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| SNSt. Nazianz | St. Nazianz | WI | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| SPSummit Place | West Allis | WI | Fabricated Metal Product Manufacturing332311 | 100-499 | ◐ LIKELY ACTIVE |
| SCSuzy's Cream Cheesecakes | Oak Creek | WI | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| SLSV Labs Prescott Corporation | Prescott | WI | Chemical Manufacturing325620 | 100-499 | ◐ LIKELY ACTIVE |
| SSwz | Stevens Point | WI | Printing and Related Support Activities323117 | 100-499 | ◐ LIKELY ACTIVE |
| SLSystems, LCC (Plant 1) | Germantown | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| TLTailored Label Products | Menomonee Falls | WI | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| TCTech Center | Sheboygan Falls | WI | Food Manufacturing311612 | 100-499 | ◐ LIKELY ACTIVE |
| TMTenere Metals Division Dresser | Dresser | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| TWTenneco - Waupun | Waupun | WI | Fabricated Metal Product Manufacturing332117 | 100-499 | ◐ LIKELY ACTIVE |
| TMThilmany Mill | Kaukauna | WI | Paper Manufacturing322121 | 100-499 | ◐ LIKELY ACTIVE |
| TOTomahawk Operations - Kaphaem Facility | Tomahawk | WI | Transportation Equipment Manufacturing336991 | 100-499 | ◐ LIKELY ACTIVE |
| TOTomahawk Operations - Somo Facility | Tomahawk | WI | Transportation Equipment Manufacturing336991 | 100-499 | ◐ LIKELY ACTIVE |
| TWTomahawk, Wi | Tomahawk | WI | Paper Manufacturing322121 | 100-499 | ◐ LIKELY ACTIVE |
| TITomah IG | Tomah | WI | Nonmetallic Mineral Product Manufacturing327215 | 100-499 | ◐ LIKELY ACTIVE |
| TPTrevor Plant | Trevor | WI | Plastics and Rubber Products Manufacturing326111 | 100-499 | ◐ LIKELY ACTIVE |
| TDTwin Disc | Racine, WI | WI | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| UUUFPI/ Universal Ventures II | Pdc | WI | Wood Product Manufacturing321213 | 100-499 | ◐ LIKELY ACTIVE |
| UIUniek, INC | Wauankee | WI | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| UAUnion Avenue | Sheboygan | WI | Food Manufacturing311612 | 100-499 | ◐ LIKELY ACTIVE |
| UEUPG Electrical | Monroe | WI | Machinery Manufacturing333517 | 100-499 | ◐ LIKELY ACTIVE |
| UNUS07 New Glarus Link Snacks Inc. | New Glarus | WI | Food Manufacturing311612 | 100-499 | ◐ LIKELY ACTIVE |
| UUS-Beloit | Beloit | WI | Food Manufacturing311919 | 100-499 | ◐ LIKELY ACTIVE |