| MMMerry Meadery | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NANalco, an Ecolab Company | Pittsburgh | PA | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| NDNexgen Design Systems | Pittsburgh | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| NWNicola Winery, LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NENoire Expedition, LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| NNNonlinear Neuro Dynamics INC. | Pittsburgh | PA | Miscellaneous Manufacturing339113 | — | ▲ REPORTED CLOSED |
| NBNoveome Biotherapeutics INC | Pittsburgh | PA | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| OPOmf Pittsburgh, INC. | Pittsburgh | PA | Furniture and Related Product Manufacturing337910 | — | ◐ LIKELY ACTIVE |
| OMOriginal Mattress Factory - Pittsburgh | Pittsburgh | PA | Furniture and Related Product Manufacturing337910 | 20-99 | ◐ LIKELY ACTIVE |
| PPPa40 Process Instruments | Pittsburgh | PA | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| PCPannier Corporation-Sandusky | Pittsburgh | PA | Miscellaneous Manufacturing339940 | 1-19 | ◐ LIKELY ACTIVE |
| PCPerformance Composite LLC | Pittsburgh | PA | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
Pittsburgh Coastal Energy, INC. | Pittsburgh | PA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◐ LIKELY ACTIVE |
| POPittsburgh - O'Hara, PA | Pittsburgh | PA | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
| PPPittsburgh, PA | Pittsburgh | PA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| PPPittsburgh Pallet Plant - 223 | Pittsburgh | PA | Wood Product Manufacturing321920 | 20-99 | ◐ LIKELY ACTIVE |
| PPPittsburgh POD BSD | Pittsburgh | PA | Machinery Manufacturing333923 | 20-99 | ◐ LIKELY ACTIVE |
| PSPittsburgh Service Center | Pittsburgh | PA | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| PSPittsburgh Spirits LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| PPlum | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| PLPromethean Lifesciences INC | Pittsburgh | PA | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| QEQuintech Electronics and Communications, Inc | Pittsburgh | PA | Computer and Electronic Product Manufacturing334220 | 1-19 | ◐ LIKELY ACTIVE |
| RLRefucilo, LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RMR&N Manufacturing, LLC | Pittsburgh | PA | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| RCRock Castle Winery LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SDSchlaegle Design Build Associates, Inc. | Pittsburgh | PA | Furniture and Related Product Manufacturing337212 | 20-99 | ◐ LIKELY ACTIVE |
| SSSecond Story Spirits, LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SSeegrid | Pittsburgh | PA | Machinery Manufacturing333924 | 100-499 | ◐ LIKELY ACTIVE |
| SCSEK Corporation / Keay | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327390 | 1-19 | ◐ LIKELY ACTIVE |
| SSSmallman Street | Pittsburgh | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| SSSouth Shore Distilling LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SCSpang & Company Corporate/Magnetics Division Headquarters | Pittsburgh | PA | Computer and Electronic Product Manufacturing334416 | 20-99 | ◐ LIKELY ACTIVE |
| SDSteel Dynamics Flat Roll Group - MetalTech | Pittsburgh | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| SESt Engineering Aethon INC | Pittsburgh | PA | Miscellaneous Manufacturing339113 | — | ◐ LIKELY ACTIVE |
| SRSweet Rust Industries | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TTaktl | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| TPThar Process LLC | Pittsburgh | PA | Machinery Manufacturing333248 | — | ◐ LIKELY ACTIVE |
| TEThe Enginehouse Winery | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TWThrone Wellness LLC | Pittsburgh | PA | Food Manufacturing311999 | — | ◐ LIKELY ACTIVE |
| TCTslapikas Consulting LLC | Pittsburgh | PA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| USUpper Saint Clair | Pittsburgh | PA | Electrical Equipment, Appliance & Component Manufacturing335210 | 20-99 | ◐ LIKELY ACTIVE |
| UVUrciuolo Vini S.a. Srl, LLC | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| UPUSA PA Pittsburgh Plant | Pittsburgh | PA | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| VFVelum Fermentation | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| VRVesuvius Research Pittsburgh - Advanced Refractories | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327120 | 1-19 | ◐ LIKELY ACTIVE |
| WBWeiss Brothers Inc. | Pittsburgh | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| WPWeiss Provision Company | Pittsburgh | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| WCWhemco-steel Castings, INC | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| WWWigle Whiskey | Pittsburgh | PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| WSWilli's Ski Shop, INC North Hills | Pittsburgh | PA | Miscellaneous Manufacturing339920 | 1-19 | ◐ LIKELY ACTIVE |