| McDonough High School Outdoor Pool | 7165 Marshall Corner Road
Pomfret, MD 20675 | (301) 932-3470 | |
| McDonough Outdoor Pool | 7165 Marshall Corner Rd.
Pomfret, MD 20675 | (301) 934-9305 | |
| Melwood Recreation Center | 9035 Ironsides Road
Nanjemoy, MD 20662 | (866) 270-3450 | |
| Menchie's Frozen Yogurt | 3029 Waldorf Market Place
Waldorf, MD 20603 | (301) 645-6068 | |
| Metropolitan United Methodist Church | 3385 Metropolitan Church Road
Indian Head, MD 20640 | | |
| Mexico Restaurant | 10598 Middleport Lane
White Plains, MD 20695 | (301) 374-2567 | |
| Michelle's Cakes | 4336 Indian Head Highway
Indian Head, MD 20640 | (301) 246-9007 | |
| Mike's Chicken and Ribs | Various Locations in Charles County
La Plata, MD 20646 | | |
| Milk & Honey Southern Inspired Kitchen | 3257 Plaza Dr
Waldorf, MD 20603 | | |
| Milton M. Somers Middle School | 300 Willow Lane
La Plata, MD 20646 | | |
| Minuteman Press | 3653 Leonardtown Road
Waldorf, MD 20601 | | |
| Mission BBQ | 3082 Festival Way
Waldorf, MD 20601 | | |
| Mix'n Sweetz Bakury | 2084 Crain Hwy
Waldorf, MD 20601 | | |
| Momi's Kitchen | 11075 Mall Circle
Waldorf, MD 20603 | (301) 645-3301 | |
| Mom's Organic Market (MOM'S) | 3301 Plaza Way
Waldorf, MD 20603 | (301) 645-0000 | |
| Moose Lodge 1709 | 4765 Crain Hwy
White Plains, MD 20695 | | |
| Moreland's Country Store | 14950 Woodville Road
Waldorf, MD 20601 | | |
| Mount Aventine, Chapman State Park | 3452 Ferry Place
Indian Head, MD 20640 | (301) 743-7613 | |
| Mount Carmel Monastery, 1790 | 5678 Mt Carmel Rd
La Plata, MD 20646 | (301) 934-1654 | |
| Mt. Hope Elementary School | 9275 Ironsides Road
Nanjemoy, MD 20662 | | |