| Lititz Borough | PA | Government | 1 | |
| Little Dixie Construction | MO | Private | 1 | |
| Little Ocmulgee EMC | GA | | 1 | |
| Livingston Parish Public Schools, LA | LA | Government | 1 | |
| Loadsum, CA | CA | | 1 | |
| Lodi Auto Sales | CA | Private | 1 | |
| Lookout Mountain Judicial Circuit Drug Task Force, GA | GA | Government | 1 | |
| Lookout Mountain, TN | TN | | 1 | |
| Lordstown Village, OH | OH | Government | 1 | |
| Loretto, TN | TN | | 1 | |
| Loudonville Village, OH | OH | Government | 1 | |
| Lower Allen Township | PA | Government | 1 | |
| Lower Kiski Ambulance Service | PA | | 1 | |
| Lower Moreland Township | PA | Government | 1 | |
| Lower Providence Township | PA | Government | 1 | |
| Lowndes County, GA | GA | Government | 1 | |
| Lucas Soil & Water Conservation District, OH | OH | Government | 1 | |
| Lynn Haven, FL | FL | | 1 | |
| Lyons Township, SD | SD | Government | 1 | |
| M & D Of Hays, Inc | KS | Private | 1 | |
| M&T Septic & Backhoe | OK | Private | 1 | |
| Mabary Farms INC | OK | Private | 1 | |
| Machar Township, ON | | Government | 1 | |
| Madera County Sheriff's Office, CA | CA | Government | 1 | |
| Madison County Board Of Education, AL | AL | Government | 1 | |
| Madison County Commissioners, OH | OH | Government | 1 | |
| Madison County Sheriff Department, AL | AL | Government | 1 | |
| Madison Fire District, OH | OH | Government | 1 | |
| Malvern, AR | AR | | 1 | |
| Manhasset-Lakeville Water District, NY | NY | Government | 1 | |
| Manhattan-Ogden USD 383 | KS | Government | 1 | |
| Manitowoc County Dpw-mrf | WI | Government | 1 | |
| Manning, AB | | | 1 | |
| Manor Township | PA | Government | 1 | |
| Mansfield, CT | CT | | 1 | |
| Mapleton City | UT | Government | 1 | |
| MarCar Leasing Inc., KY | KY | Private | 1 | |
| Marine Corps Base Camp LeJeune, NC | NC | Government | 1 | |
| Mark Bazen | FL | Private | 1 | |
| Mark Sand & Gravel Co. | MN | Private | 1 | |
| Markle, IN | IN | | 1 | |
| Marquette Board Of Light & Power | MI | Government | 1 | |
| Marrowbone Township | IL | Government | 1 | |
| Marshall County, IA | IA | Government | 1 | |
| Marshall County Road Department, KY | KY | Government | 1 | |
| Martin & Sons Excavating | KS | Private | 1 | |
| Martinsburg Rural Fire District | NE | Government | 1 | |
| Mason County | MI | Government | 1 | |
| Mass OSD Veterans Cemetery Agawam-MA | MA | Government | 1 | |
| Mass OSD Worcester County Sheriff-MA | MA | Government | 1 | |
| Master Telecomunications INC | NC | Private | 1 | |
| Matador Cattle Company | KS | Private | 1 | |
| Matagorda County, TX | TX | Government | 1 | |
| Matrix Service Company | PA | Private | 1 | |
| Max Rieke & Brothers Inc. | KS | Private | 1 | |
| Mayes Emergency Service Trust Authority | OK | | 1 | |
| McAnany Construction Inc. | KS | Private | 1 | |
| McClure Bros. Farm | KS | Private | 1 | |
| McCoy Tree Surgery Co. | TX | Private | 1 | |
| McDowell County, NC | NC | Government | 1 | |