| | Millbrook Park | New Boston, Ohio, United States | - | | - | ≥ |
| | Midway Electric Park | Wallkill, New York, United States | - | | - | |
| | Midland Beach Park | Staten Island, New York, United States | - | - | - | - |
| | MGM Grand Adventures | Las Vegas, Nevada, United States | - | | - | |
| | Meyer's Lake Park | Canton, Ohio, United States | - | - | - | |
| | Merrimack Park | Methuen, Massachusetts, United States | - | - | - | |
| | Merriland | Loveland, Colorado, United States | - | - | - | |
| | Merrie Way | San Francisco, California, United States | - | | - | |
| | Meridell Park | Pocatello, Idaho, United States | - | - | - | - |
| | Menlo Park | Perkasie, Pennsylvania, United States | - | ≤ | - | ≥ |
| | Memorial Park | Williamsport, Pennsylvania, United States | - | ≤ | - | ≥ |
| | McGuinness Amusement Park | Garden City, New York, United States | - | - | - | ≤ |
| | McCullough Lake Park | Lima, Ohio, United States | - | ≤ | - | s |
| | McCorrough's Kiddie Park | Brooklyn, New York, United States | - | - | - | |
| | Maumee Kiddieland | Maumee, Ohio, United States | - | | - | |
| | Massapequa Zoo & Kiddie Park | Massapequa Park, New York, United States | - | - | - | - |
| | Marshall Hall Park | Bryans Road, Maryland, United States | - | - | - | - |
| | Mapleview Park | Washington, Pennsylvania, United States | - | | - | |
| | Maple Grove Park | Lancaster, Pennsylvania, United States | - | ≤ | - | ≥ |
| | Mago Vista Beach Club | Arnold, Maryland, United States | - | | - | |
| | Magic World Kid's Park | Pigeon Forge, Tennessee, United States | - | | - | |
| | Magic Valley Food N' Fun | Winchester, Virginia, United States | - | - | - | |
| | Magic Mesa Fun Park | Albuquerque, New Mexico, United States | - | - | - | - |
| | Magic Landing | El Paso, Texas, United States | - | | - | ≥ |