 Trinity Tool & Manufacturing LLC | Brookfield | WI | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| Trinity Tool & Manufacturing LLC | Jackson | WI | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| TITru-Position, Inc. | Slinger | WI | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| TDTwin Disc Inc., Plant 1 (racine St.) | Racine | WI | Machinery Manufacturing333610 | — | ◇ UNVERIFIED |
| UEUcc Environmental | Pleasant Prairie | WI | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| UPUnipunch Products, INC. | Clear Lake | WI | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| UAUniversal Acoustic & Emissions Technologies, INC. | Muscoda | WI | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| UUUsemco Universal Sanitary Equipment Mfg | Tomah | WI | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| UIUzelac Industrial Properties, LLC | Pewaukee | WI | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| UIUzelac Industries, Inc. | Greendale | WI | Machinery Manufacturing333994 | — | ◇ UNVERIFIED |
| VTValley Tool, Inc. | Appleton | WI | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| VIVersevo Inc. | Hartland | WI | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| VIVersevo Inc. | Hartland | WI | Machinery Manufacturing333513 | — | ◇ UNVERIFIED |
| VMVilter Manufacturing | Cudahy | WI | Machinery Manufacturing333410 | — | ◇ UNVERIFIED |
| VLVintaholdings LLC | New Berlin | WI | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| VMVoeller Mixers INC | Port Washington | WI | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| WNWacher Neuson Logistics America (germantown) | Germantown | WI | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| WNWacker Neuson Logistics Americas LLC | Germantown | WI | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| WWalter-usa | Waukesha | WI | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| WEWarrens Equipment Company, INC. | Warrens | WI | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| WEWeasler Engineering, INC. | West Bend | WI | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| WSWeir Slurry Group, INC. | Oak Creek | WI | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| WMWolniak Machine CORP | Cornell | WI | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| WMWorldWide Machining & Welding, Inc | Superior | WI | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| XIXetex, INC. | La Crosse | WI | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| XWXylem Water Solutions | Pewaukee | WI | Machinery Manufacturing333914 | — | ◇ UNVERIFIED |
