| MMMary Mendenhall | York, PA | Machinery Manufacturing333923 | 20–99 | ◐ LIKELY ACTIVE |
| MAMatthews Aurora Funeral Solutions | York, PA | Miscellaneous Manufacturing339995 | 100–499 | ◐ LIKELY ACTIVE |
| M7MayekawaUSA 7 | York, PA | Machinery Manufacturing333912 | 1–19 | ◐ LIKELY ACTIVE |
| MCMcClarin Composites -Industrial Drive | Hanover, PA | Plastics and Rubber Products Manufacturing326199 | 20–99 | ◐ LIKELY ACTIVE |
| MPMenasha Packaging Company - PPS York Board | York, PA | Printing and Related Support Activities323111 | 20–99 | ◐ LIKELY ACTIVE |
| MWMickey's Wholesale Pizza | York, PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MWMitre Wright Inc. | York, PA | Furniture and Related Product Manufacturing337212 | 20–99 | ◐ LIKELY ACTIVE |
| MDMoon Dancer Vineyards & Winery, INC. | Wrightsville, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NHNew Hop License, INC. | Dallstown, PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| NSNF String & Son Inc hop | York Haven, PA | Fabricated Metal Product Manufacturing332710 | 1–19 | ◐ LIKELY ACTIVE |
| NSNortheast Service Center | Lewisberry, PA | Machinery Manufacturing333922 | 1–19 | ◐ LIKELY ACTIVE |
| NUNovares US LLC | Felton, PA | Plastics and Rubber Products Manufacturing326199 | 20–99 | ◐ LIKELY ACTIVE |
| OCOakwood Controls CORP | Glen Rock, PA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| OGOBE Graham Architectural Products Eden | York, PA | Fabricated Metal Product Manufacturing332321 | 20–99 | ◐ LIKELY ACTIVE |
| OROld Republic Distillery, INC | York, PA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| OLOmicspcs LLC | Glen Rock, PA | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| OEOreus Enterprises, LLC | Mount Wolf, PA | Paper Manufacturing322230 | — | ◐ LIKELY ACTIVE |
| PPa | York, PA | Transportation Equipment Manufacturing336212 | 20–99 | ◐ LIKELY ACTIVE |
| PMPA040 Mount Wolf Container | Mount Wolf, PA | Paper Manufacturing322211 | 100–499 | ◐ LIKELY ACTIVE |
| PFPainted Fox Winery LLC | Spring Grove, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PWPassalacqua Winery, LLC | New Cumberland, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| PMPcg Management Group LLC | York, PA | Fabricated Metal Product Manufacturing332313 | 100–499 | ◐ LIKELY ACTIVE |
| P1Plant 1 P1 | Hanover, PA | Food Manufacturing311919 | 20–99 | ◐ LIKELY ACTIVE |
| P2Plant 2 P2 | Hanover, PA | Food Manufacturing311919 | 100–499 | ◐ LIKELY ACTIVE |
| P3Plant 3 P3 | Hanover, PA | Food Manufacturing311919 | 500+ | ◐ LIKELY ACTIVE |
| P4Plant 4 P4 | Hanover, PA | Food Manufacturing311919 | 100–499 | ◐ LIKELY ACTIVE |
| PMPretium Manchester | Manchester, PA | Plastics and Rubber Products Manufacturing326160 | 20–99 | ◐ LIKELY ACTIVE |
| PMP.t.i. Machine, Incorporated | Delta, PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RMRand-Whitney Mid-Atlantic | Red Lion, PA | Paper Manufacturing322211 | 100–499 | ◐ LIKELY ACTIVE |
| RWRiley Welding & Fabricating LLC | Hanover, PA | Fabricated Metal Product Manufacturing332999 | 20–99 | ◐ LIKELY ACTIVE |
| SHSam Hill Springs Winery | Glenville, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SBSechrist Bros., Inc. | Dallastown, PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SVSeven Valleys | Seven Valleys, PA | Electrical Equipment, Appliance & Component Manufacturing335931 | 100–499 | ◐ LIKELY ACTIVE |
| SUSKF USA Inc. | Hanover, PA | Transportation Equipment Manufacturing336412 | 20–99 | ◐ LIKELY ACTIVE |
| SFSME Foods, LLC | York, PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SISnyders-Lance, Inc.- Hanover Manufacturing Facility | Hanover, PA | Food Manufacturing311919 | 500+ | ◐ LIKELY ACTIVE |
| SSpa | Hanover, PA | Printing and Related Support Activities323117 | 100–499 | ◐ LIKELY ACTIVE |
| SCStarbucks Company York Roasting Plant | York, PA | Food Manufacturing311920 | 100–499 | ◐ LIKELY ACTIVE |
| SWSteffenshire Winery & Meadwerks | York, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SRStone Ridge Winery | York, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SVSunset View Farm and Vineyard | York, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TBTasteful Bottled Potion's | Dover, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TCTaylor Comms - York PA - 0116-PAYO1 | York, PA | Printing and Related Support Activities323111 | 20–99 | ◐ LIKELY ACTIVE |
| TEThe Esab Group INC. | Hanover, PA | Machinery Manufacturing333992 | — | ◐ LIKELY ACTIVE |
 The Home City Ice Company Hanover | Hanover, PA | Beverage and Tobacco Product Manufacturing312113 | 20–99 | ◐ LIKELY ACTIVE |
| TYThe YGS Group | York, PA | Printing and Related Support Activities323111 | 100–499 | ◐ LIKELY ACTIVE |
| TRThunder Ridge Vineyards, LLC | Spring Grove, PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TTPC-Aberdeen | York, PA | Food Manufacturing311812 | 20–99 | ◐ LIKELY ACTIVE |
| TSTransport Solutions - Americas : MFG-York, PA-US | York, PA | Machinery Manufacturing333415 | 20–99 | ◐ LIKELY ACTIVE |
| TPTwin Pine Farm Inc. | Seven Valleys, PA | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
