| GAGrimes Aerospace Company | Urbana | OH | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| GAGrupo Antolin | Marlette | MI | Transportation Equipment Manufacturing336360 | — | ◐ LIKELY ACTIVE |
| GWGuardian West | Urbana | IL | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| GCGulf Copper Dry Dock and Rig Repair | Galveston | TX | Transportation Equipment Manufacturing336611 | 100-499 | ◐ LIKELY ACTIVE |
| GCGulf Copper Ship Repair | Corpus Christi | TX | Transportation Equipment Manufacturing336611 | 20-99 | ◐ LIKELY ACTIVE |
| GAGulfstream Aerospace Corporation | Appleton | WI | Transportation Equipment Manufacturing336411 | 500+ | ◐ LIKELY ACTIVE |
| GPGulfstream Product Support CORP | West Palm Beach | FL | Transportation Equipment Manufacturing336411 | 100-499 | ◐ LIKELY ACTIVE |
G.w. Lisk Co, INC | Clifton Spgs | NY | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| HAHanwha Aerospace USA | Glastonbury | CT | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| HTHawk Trailers INC | Manawa | WI | Transportation Equipment Manufacturing336210 | 20-99 | ◐ LIKELY ACTIVE |
| HCH C Composites LLC | Tarboro | NC | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| HAHeartland Automotive | Lafayette | IN | Plastics and Rubber Products Manufacturing326199 | 500+ | ◐ LIKELY ACTIVE |
| HAHeartland Automotive LLC | Lafayette | IN | Plastics and Rubber Products Manufacturing326199 | 500+ | ◐ LIKELY ACTIVE |
| HAHeligear Acquisition CO Dbanorthstar Aerospace (chicago) INC | Bedford Park | IL | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| HIHendrickson International - Tr Ailer Suspension Systems | Clarksville | TN | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| HTHendrickson Trailer Suspension Systems | Somerset | KY | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| HIHercules International INC | Huntington | WV | Transportation Equipment Manufacturing336310 | 20-99 | ◐ LIKELY ACTIVE |
| HMHewes Marine CO | Colville | WA | Electrical Equipment, Appliance & Component Manufacturing335314 | 100-499 | ◐ LIKELY ACTIVE |
| HHiLine | Duluth | MN | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
| HMHino Motors Manufacturing USA INC. | Mineral Wells | WV | Transportation Equipment Manufacturing336120 | 100-499 | ◐ LIKELY ACTIVE |
| HMHirotec Manufacturing America LLC | Fayetteville | TN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| HAHitachi Astemo Americas, INC. | Sunbury | OH | Transportation Equipment Manufacturing336322 | — | ◐ LIKELY ACTIVE |
| HAHitachi Astemo Americas INC - Harrodsburg Ky | Harrodsburg | KY | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| HAHitachi Astemo Greenfield, LLC | Tarboro | NC | Transportation Equipment Manufacturing336320 | — | ◐ LIKELY ACTIVE |
Hi-temp Insulation INC | Camarillo | CA | Plastics and Rubber Products Manufacturing326150 | — | ◐ LIKELY ACTIVE |
| HAHonda Aero, LLC | Burlington | NC | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| HDHonda Development and Manufacturing of America * | Anna | OH | Transportation Equipment Manufacturing336111 | — | ◐ LIKELY ACTIVE |
| HDHonda Development & Manufacturing of America, LLC - Indiana Auto Plant | Greensburg | IN | Transportation Equipment Manufacturing336110 | — | ◐ LIKELY ACTIVE |
| HDHonda Dev. & Mfg. of America, Llc, East Liberty Plant (0146000117) | East Liberty | OH | Transportation Equipment Manufacturing336110 | — | ◐ LIKELY ACTIVE |
| HTHonda Transmission Manufacturing of America INC | Russells Point | OH | Transportation Equipment Manufacturing336320 | — | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Torrance | CA | Machinery Manufacturing333517 | — | ◐ LIKELY ACTIVE |
| HEHorton Emergency Vehicles CO | Grove City | OH | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| HHotstart | Spokane | WA | Transportation Equipment Manufacturing336320 | 100-499 | ◐ LIKELY ACTIVE |
| HIHudson Industries INC | Hudson | IN | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| HAHwashin America CORP | Greenville | AL | Transportation Equipment Manufacturing336330 | 500+ | ◐ LIKELY ACTIVE |
| HSHydra Sports Boats | Columbia | SC | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| HAHydro-aire Aerospace CORP | Burbank | CA | Fabricated Metal Product Manufacturing332912 | — | ◐ LIKELY ACTIVE |
Hydroform USA Incorporated | Carson | CA | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| IMIconic Marine Group, LLC | Washington | NC | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| IIIea INC | Kenosha | WI | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| IPInnovative Plastics, INC. | Madison | AL | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
Inspired Flight Technologies, INC. | San Luis Obispo | CA | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| ISInternational Shipbreaking | Brownsville | TX | Transportation Equipment Manufacturing336611 | 100-499 | ◐ LIKELY ACTIVE |
| IMInterstate Manufacturing | White Pigeon | MI | Transportation Equipment Manufacturing336214 | 20-99 | ◐ LIKELY ACTIVE |
| IPInteva Products | Gadsden | AL | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| IBInvincible Boat Company | Opa-locka | FL | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| IDItw Drawform | Zeeland | MI | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
James Marine INC | Paducah | KY | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| JCJedco Campus | Grand Rapids | MI | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| JIJefferson Industries | West Jefferson | OH | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |