| AceCo Precision Mfg. ID | Manufacturing | 0 | — | F |
| AceCo Precision Mfg. (McGregor) ID | Manufacturing | 0 | — | C |
| ACEINTEGRATOR INC VA | Professional & Technical Services | 5 | $96,531 | — |
| Acella GA | Manufacturing | 0 | — | A |
| Acella Construction Corporation MA | Construction | 0 | — | A |
| ACEMCO Incorporated MI | Manufacturing | 0 | — | C |
| Acendance Truck Centers PA | Retail Trade | 0 | — | A |
| ACENTLE INC VA | Professional & Technical Services | 2 | $97,500 | — |
| Acentra Health, LLC MD | Professional & Technical Services | 1 | $132,800 | — |
| Acentra Health, LLC VA | Professional & Technical Services | 19 | $126,353 | — |
| Acentua Inc FL | Professional & Technical Services | 1 | $110,000 | — |
| ACEQUEST CORPORATION NJ | Professional & Technical Services | 13 | $77,789 | — |
| Acequia Animal Hospital NM | Professional & Technical Services | 0 | — | A |
| Acer America Corporation CA | Wholesale Trade | 1 | $130,000 | A |
| Acer Service Corporation TX | Other Services | 0 | — | A |
| Acero Charter Schools, Inc. (at five Chicago elementary schools) IL | — | 0 | — | — |
| Acero Charter Schools, Inc. (Octavio Paz Elementary) IL | — | 0 | — | — |
| Acero Charter Schools, Inc. (Sor Juana Ines de la Cruz K-12) IL | — | 0 | — | — |
| Acero Construction Services, Inc. TX | Construction | 0 | — | A |
| Acero Precision PA | Manufacturing | 0 | — | F |
| Aceron Group LLC GA | Professional & Technical Services | 2 | $111,020 | — |
| ACERTUS MO | Transportation & Warehousing | 0 | — | B |
| ACES Courier Services LLC CA | Transportation & Warehousing | 0 | — | F |
| Aces Disposal IN | Administrative & Waste Services | 0 | — | A |
| ACES FOR AUTISM NC | Healthcare & Social Assistance | 1 | $80,000 | — |
| ACES Institute LLC WA | Educational Services | 1 | $56,867 | — |
| Aces Up Casino Parties LLC CA | Real Estate | 0 | — | A |
| ACES Waste Service Inc. CA | Administrative & Waste Services | 0 | — | F |
| Acesur North America VA | Manufacturing | 0 | — | D |
| Acetech Group Corporation MD | Professional & Technical Services | 30 | $114,997 | — |
| Acevar LLC GA | Professional & Technical Services | 1 | $102,000 | — |
| Acevedo Contracting CA | Agriculture & Forestry | 0 | — | C |
| ACF HR Services LLC RI | Agriculture & Forestry | 0 | — | F |
| ACF Industries LLC PA | — | 0 | — | — |
| ACF Industries LLC Milton Plant PA | — | 0 | — | — |
| ACF Management, LLC AL | Professional & Technical Services | 0 | — | A |
| ACFONG15, Inc. CA | Retail Trade | 0 | — | A |
| ACG Biologics CO | — | 0 | — | — |
| ACG Delivery LLC MA | — | 0 | — | — |
| ACG Federal Reserve LLC OH | Real Estate | 0 | — | F |
| ACG Management Solutions LLC IL | Finance & Insurance | 1 | $110,000 | — |
| ACG Merchants, LLC OH | Real Estate | 0 | — | A |
| ACGI a Subsidary of Armstong World Industries MO | Manufacturing | 0 | — | A |
| ACH Foods Inc. IL | Manufacturing | 0 | — | F |
| ACH International Corp CA | Transportation & Warehousing | 1 | $54,080 | — |
| ACH-IOWA IA | Manufacturing | 0 | — | A |
| Acha Construction LLC NV | Construction | 0 | — | F |
| Achaogen, Inc. CA | — | 0 | — | — |
| Achatz Handmade Pie Co MI | Manufacturing | 0 | — | F |
| Achen Gardner Construction AZ | Construction | 0 | — | A |