| NBNewscapes Brewing INC. | Portland | ME | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
Nittobo America Inc. - ME | Portland | ME | Chemical Manufacturing325413 | 20-99 | ◐ LIKELY ACTIVE |
| NCNorthwest Casting Services | Portland | OR | Machinery Manufacturing333618 | 20-99 | ◐ LIKELY ACTIVE |
| OIOpconnect, INC. | Portland | OR | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◐ LIKELY ACTIVE |
| OOptiCraft | Portland | OR | Miscellaneous Manufacturing339115 | 20-99 | ◐ LIKELY ACTIVE |
| OPOregon Portland 6040 North Cutter Circle | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| OPOregon Portland Criterion | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| OQOregon QCC | Portland | OR | Food Manufacturing311824 | 1-19 | ◐ LIKELY ACTIVE |
| OCOrigami Catering | Portland | OR | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| OLOtro Lado | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| OLOtro Lado Bev co | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| OVOutside Van | Portland | OR | Transportation Equipment Manufacturing336213 | 20-99 | ▲ REPORTED CLOSED |
| OCOwens Corning Linnton Asphalt Planrt | Portland | OR | Petroleum and Coal Products Manufacturing324122 | 20-99 | ◐ LIKELY ACTIVE |
| OLOxarc LLC Gresham | Portland | OR | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| PCPacific Coast Fruit | Portland | OR | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| PSPCC Structurals - SWC | Portland | OR | Primary Metal Manufacturing331512 | 100-499 | ◐ LIKELY ACTIVE |
| PPcp | Portland | IN | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| PVPearl Vintners | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PCPennville Custom Cabinetry | Portland | IN | Furniture and Related Product Manufacturing337110 | 20-99 | ◐ LIKELY ACTIVE |
| PCPetit Clos | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PCPilgrim Contractors LLC | Portland | OR | Transportation Equipment Manufacturing336120 | — | ◐ LIKELY ACTIVE |
| PPPioneer Packaging LLC - Lincoln | Portland | IN | Wood Product Manufacturing321920 | 20-99 | ◐ LIKELY ACTIVE |
| PMPoly-Flow MFG | Portland | OR | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| PPortland | Portland | TN | Wood Product Manufacturing321214 | 20-99 | ◐ LIKELY ACTIVE |
| PPortland | Portland | OR | Food Manufacturing311412 | 1-19 | ◐ LIKELY ACTIVE |
| PPortland | Portland | IN | Plastics and Rubber Products Manufacturing326160 | 100-499 | ◐ LIKELY ACTIVE |
| PBPortland Branch | Portland | OR | Fabricated Metal Product Manufacturing332618 | 20-99 | ◐ LIKELY ACTIVE |
| PFPortland Forge - Portland, IN | Portland | IN | Fabricated Metal Product Manufacturing332111 | 100-499 | ◐ LIKELY ACTIVE |
| PIPortland, IN - A380 | Portland | IN | Plastics and Rubber Products Manufacturing326140 | 20-99 | ◐ LIKELY ACTIVE |
| PMPortland Millwork - BMD | Portland | ME | Wood Product Manufacturing321911 | 100-499 | ◐ LIKELY ACTIVE |
| POPortland, OR - 524 | Portland | OR | Wood Product Manufacturing321920 | 20-99 | ◐ LIKELY ACTIVE |
| POPortland Oregon Cravens | Portland | OR | Paper Manufacturing322211 | 1-19 | ◐ LIKELY ACTIVE |
| PPPortland, PA | Portland | PA | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| PPPortland Plant 114 | Portland | IN | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◐ LIKELY ACTIVE |
| PRPortland Refinery | Portland | OR | Petroleum and Coal Products Manufacturing324110 | 20-99 | ◐ LIKELY ACTIVE |
| PSPortland Sangria | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PBPrimo Brands - Portland OR Factory | Portland | OR | Beverage and Tobacco Product Manufacturing312112 | 20-99 | ◐ LIKELY ACTIVE |
| POPS Oregon Portland 2801 NE Riverside Way | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| POPS Oregon Portland 4500 SE Criterion Court | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| QOQueen of Sheba International Foods | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RWRas Wines LLC | Portland | ME | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RMRaven's Manor | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RBRemedy Beverages LLC | Portland | OR | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| RCResource Center Portland | Portland | OR | Nonmetallic Mineral Product Manufacturing327211 | 20-99 | ◐ LIKELY ACTIVE |
| RNReverend Nat's Hard Cider | Portland | OR | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| RTRigol Technologies Usa, INC. | Portland | OR | Computer and Electronic Product Manufacturing334515 | — | ◐ LIKELY ACTIVE |
| RRiverside | Portland | OR | Furniture and Related Product Manufacturing337215 | 20-99 | ◐ LIKELY ACTIVE |
| RRoastery | Portland | OR | Food Manufacturing311920 | 1-19 | ◐ LIKELY ACTIVE |
| RRRolling River Spirits | Portland | OR | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| RCRose City Distilling | Portland | OR | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |