| Southwestern Adventist University TX | Educational Services | 1 | $56,622 | — |
| SOUTHWESTERN AND AFFILIATES IN | Healthcare & Social Assistance | 0 | — | D |
| Southwestern Baptist Theological Seminary TX | Educational Services | 0 | — | A |
| Southwestern Behavioral Healthcare, Inc. IN | Healthcare & Social Assistance | 0 | — | A |
| Southwestern Bell Telephone Company MO | Information & Media | 0 | — | A |
| Southwestern College KS | Educational Services | 5 | $53,879 | — |
| Southwestern Energy PA | — | 0 | — | — |
| Southwestern Energy Co. TX | — | 0 | — | — |
| Southwestern Energy Company WV | — | 0 | — | — |
| Southwestern Group of Companies, Inc. OK | Manufacturing | 0 | — | F |
| Southwestern Health Resources TX | — | 0 | — | — |
| Southwestern Health Resources CIN TX | Healthcare & Social Assistance | 0 | — | A |
| Southwestern Health Resources Clinically Integrated Network TX | Healthcare & Social Assistance | 1 | $92,500 | — |
| Southwestern Healthcare Center PA | Healthcare & Social Assistance | 0 | — | F |
| SOUTHWESTERN ILLINOIS BUS COMPANY LLC IL | Transportation & Warehousing | 0 | — | A |
| Southwestern Illinois Bus Company LLC II IL | Transportation & Warehousing | 0 | — | A |
| Southwestern Industrial Contractors and Riggers, Inc. TX | Construction | 0 | — | F |
| Southwestern Mechanical LLC AZ | Construction | 0 | — | A |
| SOUTHWESTERN MICHIGAN EMERGENCY SERVICES, P.C. MI | Healthcare & Social Assistance | 0 | — | F |
| Southwestern Motor Transport, Inc. TX | Transportation & Warehousing | 0 | — | F |
| Southwestern Nursing & Rehabilitation PA | Healthcare & Social Assistance | 0 | — | A |
| Southwestern Oklahoma State University OK | Educational Services | 4 | $51,914 | — |
| Southwestern Oregon Community College OR | Educational Services | 0 | — | F |
| Southwestern PA Human Services PA | Healthcare & Social Assistance | 0 | — | A |
| Southwestern Pennsylvania Eye Surgery Center PA | Healthcare & Social Assistance | 0 | — | A |
| Southwestern Petroleum LLC TX | Manufacturing | 0 | — | A |
| Southwestern Restoration and Waterproofing Inc. OK | Construction | 0 | — | F |
| Southwestern Roofing & Metal, Inc. OK | Construction | 0 | — | F |
| Southwestern Services TX | Construction | 0 | — | A |
| Southwestern Vermont Medical Center VT | Healthcare & Social Assistance | 0 | — | F |
| Southwestern Virginia Mental Health Institute VA | Healthcare & Social Assistance | 0 | — | F |
| Southwestern Virginia Transit Management Company VA | Transportation & Warehousing | 0 | — | A |
| Southwestern Virgnia Gas Company VA | Utilities | 0 | — | F |
| Southwestern Wire CA | Manufacturing | 0 | — | F |
| Southwestern Wire, Inc. OK | Manufacturing | 0 | — | F |
| Southwesy Key Programs TX | Healthcare & Social Assistance | 0 | — | F |
| Southwick & Meister Inc. CT | Manufacturing | 0 | — | C |
| Southwick Wild Animal Farm Inc MA | Arts & Entertainment | 0 | — | D |
| Southwind by Wilcox LLC ID | Wholesale Trade | 0 | — | A |
| Southwind Foods CA | Manufacturing | 0 | — | F |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP CA | Transportation & Warehousing | 0 | — | A |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP LA | Transportation & Warehousing | 0 | — | A |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP OK | Transportation & Warehousing | 0 | — | F |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP TX | Transportation & Warehousing | 0 | — | A |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP WV | Transportation & Warehousing | 0 | — | A |
| SOUTHWIND FREIGHT AND GLOBAL LOGISTICS LP WY | Transportation & Warehousing | 0 | — | A |
| Southwind Orchards MN | Agriculture & Forestry | 0 | — | F |
| Southwire AL | Manufacturing | 0 | — | A |
| Southwire CA | — | 0 | — | A |
| Southwire FL | Manufacturing | 0 | — | B |
