| American Commercial Barge Line (ACBL) TN | Transportation & Warehousing | 0 | — | A |
| American Commercial Barge Line (ACBL) TX | Transportation & Warehousing | 0 | — | A |
| American Commercial College-Lubbock TX | — | 0 | — | — |
| American Commercial College-Odessa TX | — | 0 | — | — |
| American Commercial College-San Angelo TX | — | 0 | — | — |
| American Commercial College-Wichita Falls TX | — | 0 | — | — |
| American Commercial Industrial Electric LLC TN | Construction | 0 | — | A |
| American Communications Construction Inc. TX | Construction | 0 | — | B |
| American Community Mutual Insurance Co. MI | — | 0 | — | — |
| American Compaction Equipment, INC. CA | Manufacturing | 0 | — | A |
| AMERICAN COMPLETION TOOLS, INC. TX | Manufacturing | 1 | $55,494 | — |
| American Computer Development, Inc. CT | Manufacturing | 0 | — | A |
| American Computer Development, Inc. MD | Manufacturing | 0 | — | C |
| American Computer Development, Inc. NC | Manufacturing | 0 | — | D |
| American Concrete NE | Manufacturing | 0 | — | F |
| American Concrete Construction, Inc. NC | Construction | 0 | — | A |
| American Concrete Industries, Inc. ME | Manufacturing | 0 | — | F |
| American Concrete Products TX | Manufacturing | 0 | — | F |
| American Concrete Products of Kansas LLC KS | Manufacturing | 0 | — | F |
| American Concrete Supply FL | Manufacturing | 0 | — | F |
| American Conservatory Theater CA | Arts & Entertainment | 0 | — | F |
| American Conservatory Theatre Foundation CA | — | 0 | — | — |
| American Consolidated Industries AL | Wholesale Trade | 0 | — | D |
| American Consolidated Industries KY | Manufacturing | 0 | — | A |
| American Consolidated Industries OH | Manufacturing | 0 | — | A |
| American Consolidated Industries TN | Manufacturing | 0 | — | F |
| American Construction Engineering FL | Construction | 0 | — | C |
| American Construction & Engineering Co FL | Construction | 0 | — | D |
| American Construction and Supply, Inc. CA | Construction | 0 | — | A |
| American Construction Group Incorporated CA | Construction | 0 | — | A |
| American Construction Services, Inc. WI | Construction | 0 | — | A |
| American Constructors TX | Construction | 0 | — | A |
| American Constructors, Inc. TN | Construction | 0 | — | D |
| American Consulting Solutions, Inc. FL | Professional & Technical Services | 6 | $105,883 | — |
| American Containers Inc CA | Manufacturing | 0 | — | F |
| American Containers Inc GA | Manufacturing | 0 | — | F |
| American Containers Inc IN | Manufacturing | 0 | — | F |
| American Contract Systems CA | Administrative & Waste Services | 0 | — | D |
| American Contract Systems FL | Administrative & Waste Services | 0 | — | A |
| American Contract Systems IA | Administrative & Waste Services | 0 | — | A |
| American Contract Systems MN | Administrative & Waste Services | 0 | — | A |
| American Contract Systems MO | Administrative & Waste Services | 0 | — | F |
| American Contract Systems OH | Administrative & Waste Services | 0 | — | A |
| American Contract Systems PA | Administrative & Waste Services | 0 | — | F |
| American Contracting MD | Construction | 0 | — | F |
| American Contracting & Environmental Services, Inc. MD | Professional & Technical Services | 1 | $93,000 | F |
| American Contracting & Services Inc. IN | Construction | 1 | $99,050 | F |
| American Contracting Enterprises, Inc. PA | Administrative & Waste Services | 0 | — | A |
| American Contractors Grading & Paving Inc. GA | Construction | 0 | — | A |
| American Contractors, Inc. CA | Construction | 0 | — | F |
