| Lennox Industries,inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Ccc Retirement, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Londonderry SchoolHarrisburg, PA · Not reported | Harrisburg, PA | Nonprofit | Not reported | Not reported |
| Livingwell (north), Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Luchetti Sales & Service IncHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| M&m Thrift Management Company, LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| Macdermid, IncorporatedHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| E. F. Macdonald Stamp CompanyHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Madison Square Garden Productions, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Mahanoy & Mahantongo Telephone CompanyHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Majestic Mining, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Mom Brands Company, LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| The Manitowoc Company IncHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Kampack Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Manulife Service Corp.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Regal Beloit America, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Maritz Holdings IncHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Marlabs Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Martin Sprocket & Gear, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Bh/m-ii Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Masonite CorporationHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Masterplan, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Material Handling Supply, LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| Matlack, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Matthews Industries, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Matthews International CorporationHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Mcclure CompanyHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| H.b. Mcclure Company, LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| Mccormick Taylor, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| S&p Global Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Radiological Consultants, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Lp Holding CorporationHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Mcloughlin Plumbing & Heating LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| Med Associates, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| The Medical Bureau of HarrisburgHarrisburg, PA · Not reported | Harrisburg, PA | Nonprofit | Not reported | Not reported |
| General Dynamics Ots (wilkes Barre), LlcHarrisburg, PA · Not reported | Harrisburg, PA | LLC | Not reported | Not reported |
| Medusa CorporationHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Altoona, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Bradford, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Bristol, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Carnegie, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Clearfield, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york CorporationHarrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Dubois, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Kane, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Lancaster, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Pittsburgh, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| Meridian-york of Tyrone, Pa., Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| San-con, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |
| John C. Metz & Associates, Inc.Harrisburg, PA · Not reported | Harrisburg, PA | Corporation | Not reported | Not reported |