| MMMason, Mi | Mason | MI | Paper Manufacturing322211 | 100-499 | ◐ LIKELY ACTIVE |
| MOMason office | Mason | OH | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
| MOMason, OH | Mason | OH | Computer and Electronic Product Manufacturing334220 | 20-99 | ◐ LIKELY ACTIVE |
| MDMasters Drug Company, INC. | Mason | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| MVMio Vino, LLC | Mason | OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MLMTXBeef, LLC | Mason | TX | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| MCMulti-Color Corporation - Mason F&B | Mason | OH | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| MCMurphy Creek Cellars | Mason | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NMNitrex MI Operations | Mason | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| PDPorchlight Distillery LLC | Mason | TX | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| PLPrasco, LLC | Mason | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| PCPratt (Target Container), Inc. Mason, OH | Mason | OH | Paper Manufacturing322211 | 20-99 | ◐ LIKELY ACTIVE |
| RAremtec automation llc | Mason | OH | Machinery Manufacturing333999 | 20-99 | ◐ LIKELY ACTIVE |
| RTRocketforce Technologies LLC | Mason | OH | Transportation Equipment Manufacturing336415 | — | ◐ LIKELY ACTIVE |
| SCSandstone Cellars Winery | Mason | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| STSPX Technologies | Mason | OH | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| SBStollen Berries Greenhouse and Winery LLC | Mason | MI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SVSweet Valley Cider | Mason | OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| YBYonker Brothers Processing LLC | Mason | TX | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |