| SOUTHWEST LAND WATER & PIPE, LLC, TX | Construction | 0 | — | F |
| Southwest Landscape Inc CA | Administrative & Waste Services | 0 | — | D |
| Southwest Linen NV | Other Services | 0 | — | D |
| Southwest Long Term Care TX | Healthcare & Social Assistance | 0 | — | A |
| Southwest Louisiana Independence Center, llc LA | Healthcare & Social Assistance | 0 | — | C |
| Southwest Louisiana Sports & Rehabilitation Center LA | Healthcare & Social Assistance | 0 | — | A |
| Southwest LTC OK | Healthcare & Social Assistance | 0 | — | A |
| Southwest Material Handling, Inc. DBA Southwest Toyotalift Inc., CA | Wholesale Trade | 0 | — | D |
| Southwest Material Handling, Inc. DBA Southwest Toyotalift Inc., & Southwest JCB, Inc. AZ | Wholesale Trade | 0 | — | A |
| Southwest Material Handling, Inc. DBA Southwest Toyotalift Inc., & Southwest JCB, Inc. CO | Wholesale Trade | 0 | — | A |
| Southwest Material Handling, Inc. DBA Southwest Toyotalift Inc., & Southwest JCB, Inc. NM | Wholesale Trade | 0 | — | A |
| Southwest Material Handling, Inc. DBA Southwest Toyotalift Inc., & Southwest JCB, Inc. NV | Wholesale Trade | 0 | — | A |
| Southwest Materials Handling Company TX | Wholesale Trade | 0 | — | A |
| Southwest Mechanical Management Inc. CO | Construction | 0 | — | A |
| Southwest Medical Associates, dba Lovelace Medical Group NM | Healthcare & Social Assistance | 0 | — | A |
| SOUTHWEST MEDICAL CENTER KS | Healthcare & Social Assistance | 1 | $66,435 | F |
| Southwest Metro Intermediate District 288 MN | Educational Services | 3 | $71,406 | F |
| Southwest Mississippi Regional Medical Center MS | Healthcare & Social Assistance | 1 | $335,000 | — |
| Southwest Mobile Storage, Inc. AZ | Manufacturing | 0 | — | D |
| Southwest Mobile Storage, Inc. CA | Manufacturing | 0 | — | F |
| Southwest Mold, Inc dba Seitz CT | Manufacturing | 0 | — | F |
| Southwest MS Planning & Dev District MS | — | 0 | — | — |
| Southwest Nursery and Supply, LLC TX | Wholesale Trade | 0 | — | B |
| Southwest Nut Company TX | — | 0 | — | — |
| Southwest Ohio Regional Transit Authority METRO OH | — | 0 | — | — |
| Southwest Oncology CO | Healthcare & Social Assistance | 0 | — | F |
| Southwest Opportunities Center WI | Healthcare & Social Assistance | 0 | — | A |
| Southwest Plains Dairy, LLC KS | Agriculture & Forestry | 0 | — | A |
| Southwest Plastering,Inc CA | Construction | 0 | — | F |
| SOUTHWEST POOL FINISHERS INC FL | Construction | 0 | — | F |
| Southwest Pool Management, Inc. TX | Administrative & Waste Services | 0 | — | A |
| Southwest Power Pool AR | Utilities | 0 | — | A |
| Southwest Professional Properties CO | Healthcare & Social Assistance | 0 | — | F |
| SOUTHWEST PUBLISHING & MAILING CORPORATION KS | Manufacturing | 0 | — | F |
| Southwest Range Services NM | Administrative & Waste Services | 0 | — | A |
| Southwest Ready Mix OK | Manufacturing | 0 | — | A |
| SOUTHWEST REGION CONFERENCE OFSEVENTH-DAY ADVENTISTS TX | Other Services | 1 | $66,168 | — |
| Southwest Region School District AK | Educational Services | 6 | $55,547 | — |
| Southwest Regional Landfill AZ | Administrative & Waste Services | 0 | — | A |
| Southwest Regional Rehabilitation Center MI | — | 0 | — | — |
| Southwest Research Institute TX | Professional & Technical Services | 3 | $98,721 | — |
| Southwest Salt Co NM | Manufacturing | 0 | — | A |
| Southwest Sealants TX | Construction | 0 | — | A |
| Southwest Sealers TX | Administrative & Waste Services | 0 | — | A |
| Southwest Shipyard LP TX | Manufacturing | 0 | — | A |
| Southwest Slurry Seal, LLC AZ | Construction | 0 | — | F |
| Southwest Solutions MI | — | 0 | — | — |
| Southwest Specialty Coatings Inc. NV | Construction | 0 | — | A |
| Southwest Specialty Contractors NV | Construction | 0 | — | F |
| Southwest Spring IL | Other Services | 0 | — | A |
