| RKR. K. Industries, INC. | Ottawa | OH | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| 3L3re LLC | Ottawa | OH | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| AWAllied Waste Services of North America LLC | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBB & B Electronics Manufacturing Company | Ottawa | IL | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| BCBuilders Choice | Ottawa | KS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CAClarcor Air Filtration Products | Ottawa | KS | Machinery Manufacturing333411 | — | ◇ UNVERIFIED |
| CWClifford W. Estes, Co., INC. | Ottawa | IL | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CAConroys Amoco | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ELExpress Lane INC 59 | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FIFashion, INC. | Ottawa | KS | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| FMF & M Landscape | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GMGerken Material, INC. Plant #5 (0369000143) | Ottawa | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HAHasty Awards INC | Ottawa | KS | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ICIllinois Cement CO LLC | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| JOJmp Ottawa Petroleum | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| JPJohnson Pattern and Machine Works, INC. | Ottawa | IL | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| LGLeRoy Group, LLC | Ottawa | KS | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| LTLmk Technologies | Ottawa | IL | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| MBMidwest Barge Terminal LLC | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OFOttawa Forward Warehouse, Ottawa Illinois | Ottawa | IL | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| PCPenny's Concrete Inc., Ottawa (stormwater) | Ottawa | KS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PEProactive Environmental Services | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SSSelect Steel Incorporated | Ottawa | KS | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SOShell Oasis | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Southern Precision Sands LLC | Ottawa | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SSSouthside Shell | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SCStott Contracting LLC | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| TBTitan Bus, LLC | Ottawa | OH | Transportation Equipment Manufacturing336120 | — | ◇ UNVERIFIED |
| TLTrendel Lumber Company | Ottawa | KS | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| TPTrucomp Pipe LLC | Ottawa | KS | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| VSVoss Sandworks West | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WPWarren Printing & Office Products, Inc. | Ottawa | OH | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
