| American Boiler, Tank & Welding Co., Inc. NY | Manufacturing | 0 | — | A |
| American Bolt Corporation WI | Wholesale Trade | 0 | — | B |
| AMERICAN BOOK COMPANY TN | Transportation & Warehousing | 0 | — | B |
| American Borate Company VA | Wholesale Trade | 0 | — | D |
| American Boring Company Inc CA | Construction | 0 | — | A |
| American Boring Inc OH | Construction | 0 | — | A |
| American Botanicals MO | — | 0 | — | — |
| American Bottling Co. D/B/A Seven-Up Bottling Co. CA | — | 0 | — | — |
| American Bottoms IL | Utilities | 0 | — | D |
| American Bread Company LLC DE | — | 0 | — | — |
| American Bread Company LLC NJ | — | 0 | — | — |
| American Breading and Spice AR | Manufacturing | 0 | — | A |
| American Breast Care, L.P. GA | Manufacturing | 0 | — | F |
| American Bridge Company CT | Construction | 0 | — | F |
| American Bridge Company IL | Construction | 0 | — | F |
| American Bridge Company KY | Construction | 0 | — | F |
| American Bridge Company MO | Construction | 0 | — | F |
| American Bridge Company NY | Construction | 0 | — | F |
| American Bridge Company PA | Construction | 0 | — | A |
| American Bridge Company WA | Construction | 0 | — | F |
| American Bridge Manufacturing Company OR | — | 0 | — | — |
| American Broadband Holding Company dba Fastwyre Broadband AK | Information & Media | 0 | — | A |
| American Broadband Holding Company dba Fastwyre Broadband LA | Information & Media | 0 | — | A |
| American Broadband Holding Company dba Fastwyre Broadband NE | Information & Media | 0 | — | F |
| American Broadcasting Companies, Inc. CA | — | 0 | — | — |
| American Bronze Corp OH | Manufacturing | 0 | — | F |
| American Builders Supply FL | Retail Trade | 0 | — | A |
| American Building Systems LLC NV | Construction | 0 | — | F |
| American Building Wreckers, LLC CT | Administrative & Waste Services | 0 | — | F |
| American Buildings Co. NV | — | 0 | — | — |
| American Buildings Company GA | Manufacturing | 0 | — | A |
| American Buildings Company IL | Manufacturing | 1 | $88,868 | — |
| American Built Systems IL | Manufacturing | 0 | — | F |
| American Bullnose Tampa Bay, Inc. FL | Manufacturing | 0 | — | F |
| American Burean of Shipping TX | Professional & Technical Services | 0 | — | A |
| American Bureau of Shipping TX | Professional & Technical Services | 2 | $127,536 | A |
| AMERICAN BUSINESS SOLUTIONS INC OH | Professional & Technical Services | 13 | $514,246 | — |
| AMERICAN CABLE & HARNESS WI | Manufacturing | 0 | — | A |
| American Cable and Electronics, Inc. WI | Manufacturing | 0 | — | A |
| American Cable Co PA | Manufacturing | 0 | — | D |
| American Cable Construction, LLC NY | Construction | 0 | — | F |
| American Campus Communities TX | Real Estate | 0 | — | F |
| AMERICAN CANCER SOCIETY, INC. GA | Other Services | 6 | $92,740 | — |
| American Cap Company PA | Manufacturing | 0 | — | F |
| American Capital MD | — | 0 | — | — |
| American Capital, Ltd. NY | — | 0 | — | — |
| American Car Center TN | — | 0 | — | — |
| American Career College, Inc - Long Beach CA | — | 0 | — | — |
| American Career College, Inc. - Lynwood CA | — | 0 | — | — |
| American Cargo Group Trailers LLC TX | Manufacturing | 0 | — | F |
