Valentin Vasiliyevich Bondarenko (Ukrainian: Валентин Васильович Бондаренко, Russian: Валентин Васильевич Бондаренко; 16 February 1937 – 23 March 1961) was a Soviet fighter pilot selected in 1960 for training as a cosmonaut. He died as the result of burns sustained in a fire during a 15-day low-pressure endurance experiment in Moscow. The government concealed the death, along with Bondarenko's membership in the cosmonaut corps, until 1980. A crater on the Moon's far side is named after him.

Andrei Ivanovich Borisenko (Андрей Иванович Борисенко - born April 17, 1964 in Leningrad, Russia) is a Russian cosmonaut. He was selected as a cosmonaut in May 2003, and is a veteran of two long duration missions to the International Space Station. Borisenko served as a flight engineer onboard Soyuz TMA-21 for Expedition 27, the 27th long-duration mission to the International Space Station (ISS). He also served as the commander of the International Space Station for Expedition 28. He launched for the second time in October 2016 onboard Soyuz MS-02 as a flight engineer of Expedition 49 and Expedition 50. He returned to Earth in April 2017.

Nikolai Mikhailovich Budarin (Russian: Николай Михайлович Бударин) (born April 29, 1953 in Kirya, Chuvashia) is a retired Russian cosmonaut, a veteran of three extended space missions aboard the Mir Space Station and the International Space Station. He has also performed eight career spacewalks with a total time of 44 hours. Named a cosmonaut candidate in 1989, Budarin's first space mission was a long-term assignment aboard the space station Mir in 1995. Since then, he again made extended stays on Mir in 1998 and the International Space Station Expedition 6 from 2002 to 2003.

Valery Fyodorovich Bykovsky (Russian: Вале́рий Фёдорович Быко́вский; born 2 August 1934) is a retired Soviet cosmonaut who flew three manned space mission space flights: Vostok 5, Soyuz 22, and Soyuz 31. He was also backup for Vostok 3 and Soyuz 37.

Maurizio Cheli (born 4 May 1959) is an Italian air force officer, a European Space Agency astronaut and a veteran of one NASA space shuttle mission. He trained with the United States Air Force and was selected as an astronaut candidate by the European Space Agency in 1992. He holds the rank of lieutenant colonel in the Italian Air Force. He flew aboard STS-75 in 1996 as a mission specialist.

Chen Dong (simplified Chinese: 陈冬; traditional Chinese: 陳冬; pinyin: Chén Dōng; born 12 December 1978) is a Chinese pilot and astronaut selected as part of the Shenzhou program. He was selected to fly on the Shenzhou 11 mission in October 2016 with astronaut Jing Haipeng. The two underwent more than 3,000 hours of training before the launch of the spacecraft. On 17 October 2016 On 07:30 local time (23:30 GMT on 16 October), Chen lifted off with Shenzhou 11 for a 33-day space mission to the Tiangong-2 space station as his first spaceflight, launched from the Jiuquan Satellite Launch Center using a Long March 2F launch rocket. The crew landed successfully after the 33 day mission on 18 November 2016, marking China's longest manned space flight to date. The reentry module of the Shenzhou-11 spacecraft landed in Inner Mongolia around 2.15 p.m(China time) after detaching from the space lab on 17 November.

Chen Quan (simplified Chinese: 陈全; traditional Chinese: 陳全; pinyin: Chén Quán) is a Chinese pilot selected as part of the Shenzhou program. Chen was selected to be an astronaut in 1998 and served as commander of the backup crew for Shenzhou 7 which flew in September 2008.

Jean-Loup Jacques Marie Chrétien (born 20 August 1938) is a French retired Général de Brigade (brigadier general) in the Armée de l'Air (French air force), and a former CNES spationaut. He flew on two Franco-Soviet space missions and a NASA Space Shuttle mission. Chrétien was the first Frenchman and the first western European in space.

Jean-François André Clervoy (born 19 November 1958) is a French engineer and a CNES and ESA astronaut. He is a veteran of three NASA Space Shuttle missions.

Samantha Cristoforetti (born 26 April 1977 in Milan) is an Italian European Space Agency astronaut, Italian Air Force pilot and engineer. She holds the record for the longest uninterrupted spaceflight of a European astronaut (199 days, 16 hours), and until June 2017 held the record for the longest single space flight by a woman until this was broken by Peggy Whitson. She is also the first Italian woman in space. Samantha Cristoforetti is also known as the first person who brewed an espresso in space.

Frank, Viscount De Winne (born 25 April 1961, in Ledeberg, Belgium) is a Belgian Air Component officer and an ESA astronaut. He is Belgium's second person in space (after Dirk Frimout). He was the first ESA astronaut to command a space mission when he served as commander of ISS Expedition 21. ESA astronaut de Winne serves currently as Head of the European Astronaut Centre of the European Space Agency in Cologne/Germany (Köln).

Vladimir Nikolayevich Dezhurov (Russian: Влади́мир Никола́евич Дежу́ров; born July 30, 1962) is a former cosmonaut who resides in Star City, Moscow. He is a veteran of two spaceflights, to the Mir and International Space Stations. During his career, Dezhurov also conducted nine spacewalks before his retirement on July 12, 2004.