| | Merlin's Magic Land | Lelant, Cornwall, England, United Kingdom | - | ≤ | - |
| | Merrie Way | San Francisco, California, United States | - | | - |
| | Merriland | Loveland, Colorado, United States | - | - | - |
| | Merrimack Park | Methuen, Massachusetts, United States | - | - | - |
| | Metalworkers' Palace | Tula, Tula, Russia | - | ≤ | - |
| | Meteor Valley Water Park | Bao'an, Shenzhen, Guangdong, China | - | | - |
| Me World | Busan, South Korea | - | | - |
| | Meyer's Lake Park | Canton, Ohio, United States | - | - | - |
| | MGM Grand Adventures | Las Vegas, Nevada, United States | - | | - |
| | MGM Selvee World | Visakhapatnam, Andhra Pradesh, India | - | ≤ | - |
| | Miami Beach Amusement Park | Port Talbot, Neath Port Talbot, Wales, United Kingdom | - | ≤ | - |
| | Midland Beach Park | Staten Island, New York, United States | - | - | - |
| | Midlands Industrial Exhibition | Nottingham, Nottinghamshire, England, United Kingdom | - | | - |
| | Midway Electric Park | Wallkill, New York, United States | - | | - |
| | Millbrook Park | New Boston, Ohio, United States | - | | - |
| | Millsprings Amusement Park | Paducah, Kentucky, United States | - | - | - |
| | Minato Amusement Park | Minato, Osaka, Osaka, Japan | - | | - |
| | Minerva Amusement Park | Columbus, Ohio, United States | - | | - |
| | Mines Wonderland | Serdang, Selangor, Malaysia | - | ≤ | - |
| Mirabilandia | Olinda, Pernambuco, Brazil | - | | - |
| | Miracle Strip Amusement Park | Panama City Beach, Florida, United States | - | | - |
| Miragica | Molfetta, Apulia, Italy | - | | - |
| Mirapolis | Courdimanche, Île-de-France, France | - | | - |
| Misaki Park | Misaki, Sennan, Osaka, Japan | - | | - |