| HTHubbard Tool & Die CORP. | Rome | NY | 20–99 | ◐ LIKELY ACTIVE |
| HMHudson Machine and Tool | Hammond | WI | 20–99 | ◐ LIKELY ACTIVE |
| HNHuf North America Automotive Parts Manufacturing, CORP | Greeneville | TN | 100–499 | ◐ LIKELY ACTIVE |
| HAHuhtamaki - Albertville Operations | Albertville | AL | — | ◐ LIKELY ACTIVE |
| HHHuhtamaki Hammond | Hammond | IN | 100–499 | ◐ LIKELY ACTIVE |
| HEHunter Engineering Company Raymond Plant | Raymond | MS | 500+ | ◐ LIKELY ACTIVE |
| HIHunter Industries/DBA Sousa & DeMayo | Attleboro Falls | MA | 20–99 | ◐ LIKELY ACTIVE |
| HMHunter Machine INC. | Victor | NY | 20–99 | ◐ LIKELY ACTIVE |
| HBHuntsman Building Solutions - Arlington TX | Arlington | TX | 20–99 | ◐ LIKELY ACTIVE |
| HMHuntsman - Mcintosh Operations | Mc Intosh | AL | — | ◐ LIKELY ACTIVE |
| HAHutchinson Aerospace & Industry, INC. | Hopkinton | MA | — | ◐ LIKELY ACTIVE |
| HWH & W Manufacturing | Spring | TX | 20–99 | ◐ LIKELY ACTIVE |
| HWH W Nicholson Welding & Manufacturing INC | Apollo | PA | — | ◐ LIKELY ACTIVE |
| HUHypertech Usa, INC. | Ventura | CA | — | ◐ LIKELY ACTIVE |
| HTHytech Tool & Design CO. | Edinboro | PA | 20–99 | ◐ LIKELY ACTIVE |
| HTHyundai Transys Seating Systems | Montgomery | AL | — | ◐ LIKELY ACTIVE |
| ISI-con Systems, INC. | Oviedo | FL | 20–99 | ◐ LIKELY ACTIVE |
| ITICP Tampa Sun | Tampa | FL | 20–99 | ◐ LIKELY ACTIVE |
| IBICT Billet LLC | Wichita | KS | 20–99 | ◐ LIKELY ACTIVE |
| IIIda International, INC. | Derby | CT | 1–19 | ◐ LIKELY ACTIVE |
| ICIdeal Clamp Products INC | Smyrna | TN | 100–499 | ◐ LIKELY ACTIVE |
| IWIdeal Window Manufacturing Inc. | Bayonne | NJ | 100–499 | ◐ LIKELY ACTIVE |
| IPIllinois Pulley & Gear INC | Schaumburg | IL | 20–99 | ◐ LIKELY ACTIVE |
| IIILPEA Industries - OEM/Miller Div. | Aurora | OH | 100–499 | ◐ LIKELY ACTIVE |
| IBImasen Bucyrus Technology Inc, | Bucyrus | OH | 100–499 | ◐ LIKELY ACTIVE |
| ICIml Containers Iowa, INC | Le Mars | IA | 20–99 | ◐ LIKELY ACTIVE |
| IEImperial Electronic Assembly, INC. | Brookfield | CT | 100–499 | ◐ LIKELY ACTIVE |
Imperial Machine & Tool CO | Blairstown | NJ | 20–99 | ◐ LIKELY ACTIVE |
| ITImperial Trailer Mfg. & Sales, INC. | Olney | IL | — | ◐ LIKELY ACTIVE |
| IAINCA Acquisitions DBA Dometic Marine Products | Sparta | TN | 100–499 | ◐ LIKELY ACTIVE |
| ICIncoe Corporation | Auburn Hills | MI | 100–499 | ◐ LIKELY ACTIVE |
| IPIndependence Porcelain Enamel | Independence | MO | — | ◐ LIKELY ACTIVE |
Industrial Automation LLC | Rochester Hills | MI | 1–19 | ◐ LIKELY ACTIVE |
| IDIndustrial Dielectrics Incorporated Dba Idi Composites International | Noblesville | IN | — | ◐ LIKELY ACTIVE |
| IMIndustrial Machine Works, Incorporated | Waynesboro | VA | — | ◐ LIKELY ACTIVE |
| IMIndustrial Manufacturing Inc. | Albany | GA | 100–499 | ◐ LIKELY ACTIVE |
| IMIndustrial Metal Processing, INC | Santee | CA | — | ◐ LIKELY ACTIVE |
| IPIndustrial Parts Specialties, LLC | Port Allen | LA | 20–99 | ◐ LIKELY ACTIVE |
| IRIndustrial Recyclers, LLC | Sidney | OH | 20–99 | ◐ LIKELY ACTIVE |
| IRIndustrial Resources Network,llc | Wilmington | DE | — | ◐ LIKELY ACTIVE |
| IWIndustrial Weldors & Machinists, Inc | Duluth | MN | 20–99 | ◐ LIKELY ACTIVE |
| IWInfiltrator Water Technologies LLC | Winchester | KY | 100–499 | ◐ LIKELY ACTIVE |
| ICInfinity Contacts, INC. | Rancho Cucamonga | CA | — | ▲ REPORTED CLOSED |
| ISInfinity Systems, INC. | Yorba Linda | CA | — | ◐ LIKELY ACTIVE |
| ITInhance Technologies, LLC | Homerville | GA | — | ◐ LIKELY ACTIVE |
| IPInline Plastics CORP. | Salt Lake City | UT | 100–499 | ◐ LIKELY ACTIVE |
| IPInline Plastics CORP. | Mcdonough | GA | 100–499 | ◐ LIKELY ACTIVE |
Inline Plastics Inc. (Connecticut) | Shelton | CT | 100–499 | ◐ LIKELY ACTIVE |
| IRInnovative Rotational Molding, INC. | Madera | CA | — | ◐ LIKELY ACTIVE |
| IGInoac Group North America LLC | Springfield | KY | 100–499 | ◐ LIKELY ACTIVE |