| 1 | A. F. Industries, Inc.Not reported | Corporation | Not reported | Not reported |
| 2 | A.f.r. Construction Co.Not reported | Corporation | Not reported | Not reported |
| 3 | Acacia Manor, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 4 | Acton & Neelan, Inc.Not reported | Corporation | Not reported | Not reported |
| 5 | Allegheny Academy, Inc.Not reported | Corporation | Not reported | Not reported |
| 6 | Allegheny AcademyNot reported | Nonprofit | Not reported | Not reported |
| 7 | Allegheny Label, Inc.Not reported | Corporation | Not reported | Not reported |
| 8 | Allegheny Quick Foods, Inc.Not reported | Corporation | Not reported | Not reported |
| 9 | Allegheny Resources Development CompanyNot reported | Corporation | Not reported | Not reported |
| 10 | Allegheny Standard Products, Inc.Not reported | Corporation | Not reported | Not reported |
| 11 | Alison Park Assembly of God ChurchNot reported | Nonprofit | Not reported | Not reported |
| 12 | Alpha Research CorpNot reported | Corporation | Not reported | Not reported |
| 13 | Alpine Pools, Inc.Not reported | Corporation | Not reported | Not reported |
| 14 | Straightline CorporationNot reported | Corporation | Not reported | Not reported |
| 15 | Anbell Inc.Not reported | Corporation | Not reported | Not reported |
| 16 | Ande, D. L., Inc.Not reported | Corporation | Not reported | Not reported |
| 17 | Anderson Sales & Service, Inc.Not reported | Corporation | Not reported | Not reported |
| 18 | Ascension Lutheran Church of the North Hills Area, Allegheny County, PennsylvaniaNot reported | Nonprofit | Not reported | Not reported |
| 19 | Ascension Lutheran Church of the North Hills Area, Allegheny County PennsylvaniaNot reported | Nonprofit | Not reported | Not reported |
| 20 | Ascension Lutheran Church of the North Hills Area Allegheny County PennsylvaniaNot reported | Nonprofit | Not reported | Not reported |
| 21 | Auld, John H and Brothers CompanyNot reported | Corporation | Not reported | Not reported |
| 22 | Northwood Enterprises Inc.Not reported | Corporation | Not reported | Not reported |
| 23 | Babcock Motors IncNot reported | Corporation | Not reported | Not reported |
| 24 | Beggs, Nelson S. & C. Michael Daily Inc.Not reported | Corporation | Not reported | Not reported |
| 25 | Bela Vista CorporationNot reported | Corporation | Not reported | Not reported |
| 26 | Betz.regis J IncNot reported | Corporation | Not reported | Not reported |
| 27 | Big Bear Oil CompanyNot reported | Corporation | Not reported | Not reported |
| 28 | Brittany Anne Stables, Inc.Not reported | Corporation | Not reported | Not reported |
| 29 | Bruhn's Freezer Meats of Pittsburgh, Inc.Not reported | Corporation | Not reported | Not reported |
| 30 | Builders Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 31 | Burchfield Pre-school Association, IncorporatedNot reported | Nonprofit | Not reported | Not reported |
| 32 | Calmac CorporationNot reported | Corporation | Not reported | Not reported |
| 33 | Calvary Church IndependentNot reported | Nonprofit | Not reported | Not reported |
| 34 | Cardland East, Inc.Not reported | Corporation | Not reported | Not reported |
| 35 | Cardland Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | Cardland West Inc.Not reported | Corporation | Not reported | Not reported |
| 37 | Casey's North Hills Corp.Not reported | Corporation | Not reported | Not reported |
| 38 | Cauley Holding CompanyNot reported | Corporation | Not reported | Not reported |
| 39 | Char-lee, Inc.Not reported | Corporation | Not reported | Not reported |
| 40 | Chiurazzi Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 41 | Clineval. Inc.Not reported | Corporation | Not reported | Not reported |
| 42 | The John P Cochran CoNot reported | Corporation | Not reported | Not reported |
| 43 | Coil-handling Engineering CompanyNot reported | Corporation | Not reported | Not reported |
| 44 | Col-don Unlimited, Inc.Not reported | Corporation | Not reported | Not reported |
| 45 | Components, Inc.Not reported | Corporation | Not reported | Not reported |
| 46 | Conference of Northeastern Allegheny County CommunitiesNot reported | Nonprofit | Not reported | Not reported |
| 47 | Critchlow Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 48 | Decoma CorporationNot reported | Corporation | Not reported | Not reported |
| 49 | Dimond William J., Inc.Not reported | Corporation | Not reported | Not reported |
| 50 | Divine Providence FoundationNot reported | Nonprofit | Not reported | Not reported |