Ravish Malhotra (born 25 December 1943 born in Lahore, British India is a retired Air Commodore of the Indian Air Force. In 1982, he was chosen to train for spaceflight in the Soviet Union's Intercosmos program. Malhotra served as backup for Rakesh Sharma on the Soyuz T-11 mission which launched the first Indian into space, but never went to space himself. Malhotra was awarded the Kirti Chakra in 1984.

Yury Vasilyevich Malyshev (Russian: Ю́рий Васи́льевич Ма́лышев) was born in the village Nikolayevsk, Stalingrad Oblast (Volgograd Oblast), USSR, on 27 August 1941. He was Commander of Soyuz T-2 (5–9 June 1980) and Soyuz T-11 (3–11 April 1984).

Gennadi Mikhailovich Manakov is a former cosmonaut who commanded two Soyuz flights. He was selected on 2 September 1985 and flew as Commander on Soyuz TM-10 and Soyuz TM-16, retiring on 20 December 1996.

Musa Khiramanovich Manarov (Russian: Муса Хираманович Манаров; born March 22, 1951 in Baku, Azerbaijan SSR) is a former cosmonaut who spent 541 days in space. From December 21, 1987 to December 21, 1988 he flew as flight engineer on Soyuz TM-4. The flight duration was 365 days 22 hours 38 minutes. From December 2, 1990 to May 26, 1991 he flew again as a flight engineer on Soyuz TM-11. The duration was 175 days 1 hour 50 minutes,[2] the longest continuous time spent in space by anyone at that time. During his 176-day stay, Manarov observed the Earth and worked in space manufacturing. He also performed 20 hours of spacewalks.

Dr. Ulf Dietrich Merbold (born June 20, 1941) is the first West German citizen and second German native (after Sigmund Jähn) to have flown in space. He is also the first member of the European Space Agency Astronaut Corps to participate in a spaceflight mission and the first non-US citizen to reach orbit in a US spacecraft. In 1983, he and Byron Lichtenberg became the first Payload Specialists to fly on the shuttle.

Ernst Willi Messerschmid (born May 21, 1945) is a German physicist and former astronaut. From 1978 to 1982, he worked at the DFVLR (the precursor of the DLR) in the Institute of Communications Technology in Oberpfaffenhofen on space-borne communications. In 1983, he was selected as one of the astronauts for the first German Spacelab mission D-1. He flew as payload specialist on STS-61-A in 1985, spending over 168 hours in space.

Alexander Alexanderovich Misurkin (Russian: Aлександр Aлександрович Мисуркин) born on September 23, 1977, a major in the Russian Air Force, is a Russian cosmonaut, selected in 2006. He flew aboard Soyuz TMA-08M on 28 March 2013 as his first space mission, and launched on Soyuz MS-06 as his second flight, in 2017. He was Commander of the International Space Station for Expedition 54.

Andreas Enevold Mogensen (born November 2, 1976) is a Danish engineer and astronaut. He was the first Dane to fly in space as part of the iriss programme On September 2, 2015, Mogensen was launched with Soyuz TMA-18M to ISS, and landed with Soyuz TMA-16M ten days later. He was travelling with another visiting flight engineer, Aidyn Aimbetov. Among the items Andreas brought along were LEGO figures and a poster for Copenhagen Suborbitals.

Abdul Ahad Mohmand (Pashto: عبدالاحد مومند‎; born January 1, 1959) is a former Afghan Air Force aviator who became the first Afghan citizen and fourth Muslim to journey to outer space. He became one of Soyuz TM-6 crew members and spent nine days aboard the Mir space station in 1988 as an Intercosmos Research Cosmonaut.

Mamoru “Mark” Mohri (毛利 衛 Mōri Mamoru, born 29 January 1948), AM is a Japanese scientist, a former NASDA astronaut, and a veteran of two NASA space shuttle missions. Mohri was selected by the National Space Development Agency of Japan (now JAXA) to train as a payload specialist for a Japanese materials science payload. He flew his first space mission aboard STS-47 in 1992 as chief payload specialist for Spacelab-J. Mohri subsequently made another trip into space as part of mission STS-99 in 2000.

Boris Vladimirovich Morukov (Russian: Бори́с Влади́мирович Моруков; 1 October 1950 – 1 January 2015) was a Russian physician at the State Research Center RF-Institute for Biomedical Problems (IBMP). He trained with the Russian Federal Space Agency as a research-cosmonaut and flew aboard NASA Space Shuttle mission STS-106 as a mission specialist.

Chiaki Mukai (向井 千秋 Mukai Chiaki, born May 6, 1952, Tatebayashi, Gunma, Japan) is a Japanese doctor and JAXA astronaut. She was the first Japanese woman in space, and was the first Japanese citizen to have two spaceflights. Both were Space Shuttle missions; her first was STS-65 aboard Space Shuttle Columbia in July 1994, which was a Spacelab mission. Her second spaceflight was STS-95 aboard Space Shuttle Discovery in 1998. In total she has spent 23 days in space.