M
From Explorer Corps
- Ma'anshan
- Machida
- Macintosh
- Mackenzie
- Macksburg
- MacLeod's Land
- Macomb
- Maderas
- Madiun
- Madras
- Maestu
- Mahone
- Maia
- Main Street
- Maisons
- Maladar
- Malagrotta
- Maldonado
- Malibu
- Mallory's World
- Manapire
- Manassas
- Mandaoaaru
- Mandaree
- Mandate
- Manihiki
- Mankova
- Mannedorf
- Manotick
- Mansfield
- Mansu-ri
- Manteno
- Mara
- Marantha
- Mararn
- Marawi
- Marcus
- Marduk
- Marfik
- Mariefred
- Marielund
- Marik
- Maritgues
- Marius's Tears
- Markab
- Markesan
- Marlette
- Marlowe's Rift
- Marodzi
- Marshdale
- Masterson
- Matamoras
- Matar
- Matheran
- Matsu
- Matsuida
- Mauckport
- Maule
- Mauripur
- Maxie's Planet
- Maximillian
- Maxwell
- Mayetta
- Maynard
- McAffe
- McAlister
- McComb
- McGehee
- McHenry
- McKenna
- McRae
- Meacham
- Meadowvale
- Medellin
- Medzev
- Megarez
- Megrez
- Meilen
- Meinacos
- Meinrad
- Mejicanos
- Melcher
- Melissia
- Memmingen
- Memphis
- Mendham
- Menkalinan
- Menkar
- Menke
- Menkent
- Menkib
- Mentasta
- Merak
- Mercedes
- Mermentau
- Merope
- Mersa Matruh
- Merton
- Mesa Verde
- Mesartim
- Metter
- Mezzana
- Miaplacidus
- Mica I
- Mica V
- Mica VII
- Micros III
- Midale
- Midkiff
- Midway
- Millerton
- Milligan
- Milligan's World
- Millray
- Millungera
- Milnerton
- Milos
- Milton
- Minakuchi
- Minderoo
- Mineite
- Minnacora
- Minowa
- Miquelon
- Mira
- Mirach
- Mirage
- Mirfak
- Misery
- Mishkadrill
- Mississauga
- Mitchel
- Mitchella
- Mithron
- Miyada
- Mizar
- Mizunami
- Mkuranga
- Mogyorod
- Mokane
- Molino
- Molokai
- Monhegan
- Monistrol
- Monongahela
- Monroe
- Montcoal
- Montmarault
- Montour
- Monywa
- Moore
- Moravian
- Mordialloc
- Morgan's Holdfast
- Morges
- Moriguchi
- Moritz
- Morningside
- Morrill
- Morthac
- Morven
- Mosiro
- Moultrie
- Mozirje
- Mualang
- Multan
- Mundrabilla
- Muphrid
- Murchison
- Muridox
- Muscida
- Muskegon
