M
- Samora Moisés Machel, President of Mozambique (1986)
- John Maclean, Scottish socialist (1979)
- Anton Makarenko, educationist (1988)
- Oleg Makarov, cosmonaut (1978, 1981)
- Stepan Makarov, Russian admiral (1949, 1989)
- Rodion Malinovsky, Marshal of the Soviet Union (1973)
- Yury Vasilyevich Malyshev, cosmonaut (1980)
- Dmitry Mamin-Sibiryak, Russian writer (1952)
- Jalil Mammadguluzadeh, Azeri writer (1966)
- Nelson Mandela, South African politician (1988)
- Jean-Paul Marat, French revolutionary (1989)
- Samuil Marshak, writer (1987)
- Karl Marx
- Mesrop Mashtots, Armenian alphabet inventor (1962)
- Alexander Matrosov, World War II soldier (1944, 1963)
- Jan Matejko, Polish painter (1955)
- Ilya Ilyich Mechnikov, microbiologist (1991)
- Dmitry Medvedev, World War II partisan (1970)
- Vyacheslav Menzhinsky, revolutionary (1974)
- Kirill Meretskov, Marshal of the Soviet Union (1977)
- Sergey Merkurov, sculptor (1981)
- Michelangelo, Italian painter (1964)
- Vincas Mickevičius-Kapsukas, Lithuanian revolutionary (1957)
- Adam Mickiewicz, Polish poet (1955)
- Kārlis Miesnieks, painter (1987)
- Mikhail Millionshchikov, physicist and politician (1974)
- John Milton, English poet (1958)
- Grigory Minkh, Russian physician (1960)
- Viktor Miroshnichenko, World War II soldier (1961)
- Togolok Moldo, Kyrgyz songwriter (1962)
- Konon Molody, intelligence agent alias Gordon Lonsdale (1990)
- Vasily Molokov, aviator (1935)
- Wolfgang Amadeus Mozart, Austrian composer (1956)
- Vera Mukhina, sculptor (1989)
- Mihály Munkácsy, Hungarian painter (1969)
- Modest Mussorgsky, Russian composer (1951, 1989)
Read more about this topic: List Of People On Stamps Of The Union Of Soviet Socialist Republics