• Macedonia - Republika Makedonija
  • Madagascar - République de Madagascar
  • Maine - The Pine Tree State
  • Malawi - Republic of Malawi
  • Malaysia - Independent federation in southeast Asia
  • Maldives - Dhivehi Raajjeyge Jumhooriyyaa - Republic of Maldives
  • Mali - République de Mali
  • Malta - Repubblika ta' Malta
  • Manitoba - Province of Canada
  • Marshall Islands - Republic of the Marshall Islands
  • Maryland - The Free State - ratified Constitution 28 Apr 1788
  • Massachusetts - The Bay State - ratified Constitution 6 Feb 1788
  • Mauritania - Al Jumhuriyah al Islamiyah al Muritaniyah - Islamic Republic of Mauritania
  • Mauritius - Republic of Mauritius
  • Mexico - Estados Unidos Mexicanos
  • Miami, Florida - Seat of Miami-Dade county, incorporated 1896
  • Michigan - The Wolverine State
  • Micronesia - Federated States of Micronesia
  • Middle East - The countries of southwestern Asia and northeastern Africa
  • Minnesota - The North Star State
  • Mississippi - The Magnolia State
  • Missouri - The Show Me State
  • Moldova - Republica Moldova
  • Monaco - Principauté de Monaco
  • Mongolia - Mongol Uls - State of Mongolia
  • Montana - Big Sky Country
  • Montenegro - Crna Gora, republic in the Balkan Peninsula
  • Morocco - Al Mamlakah al Maghribiyah - Kingdom of Morocco
  • Mozambique - República de Moçambique
  • Myanmar - Pyidaungzu Myanma Naingngandaw - Union of Myanmar