Sheikh Muszaphar Shukor Al Masrie bin Sheikh Mustapha (born 27 July 1972) is a Malaysian orthopaedic surgeon and the first Malaysian astronaut. He launched to the International Space Station aboard Soyuz TMA-11 with the Expedition 16 crew on 10 October 2007. Sheikh Muszaphar flew under an agreement with Russia through the Angkasawan program, and returned to Earth on 21 October 2007, aboard Soyuz TMA-10 with the Expedition 15 crew members, Fyodor Yurchikhin and Oleg Kotov.

Oleg Ivanovich Skripochka (Russian: Оле́г Ива́нович Скри́почка; born 24 December 1969 in Nevinnomyssk, Stavropol Krai, Russian SFSR, Soviet Union) is a Russian cosmonaut. He served as an Expedition 25/26 and 61/62 crewmember. December 1st, 2021 Roskosmos announced Skripochka's retirement from active duty and his assignment to a training official role within the russian space agency.

Aleksandr Aleksandrovich Skvortsov (Russian: Aлександр Aлександрович Скворцов; born May 6, 1966) is a Russian cosmonaut. He has had two spaceflights, which were long-duration missions aboard the International Space Station. His first spaceflight took place from April to September 2010, and was launched with the spacecraft Soyuz TMA-18. He arrived at the station part way through Expedition 23, of which Oleg Kotov was the Commander. When Expedition 24 began in June, Skvortsov became Commander.

Anatoly Yakovlevich Solovyev (Russian: Анатолий Яковлевич Соловьёв; born January 16, 1948 – alternate spelling "Solovyov") is a retired Russian and Soviet cosmonaut and pilot. Solovyev holds the world record on the number of spacewalks performed (16), and accumulated time spent spacewalking (over 82 hours).

Vladimir Alekseyevich Solovyov (Russian: Влади́мир Алексе́евич Соловьёв; born 11 November 1946) is a former Soviet cosmonaut. He was selected as a cosmonaut on 1 December 1978 and flew as Flight Engineer on Soyuz T-10 and Soyuz T-15, spending a total of 361 days, 22 hours, 49 minutes in space. His first flight, Soyuz T-10, took off on 8 February 1984, to join Salyut 7. The crew spent ten months (nearly 237 days) performing numerous medical and space manufacturing experiments. They came down aboard Soyuz T-11 on 2 October 1984. Solovyov's second flight was aboard Soyuz T-15, taking off on 13 March 1986 and coming back aboard the same craft on 16 July 1986, 125 days later. During the T-15 mission, the crew transferred equipment from Salyut-7 to the new Mir space station; they were the last aboard the former and the first aboard the latter.

Gennadi Mikhailovich Strekalov (Russian: Генна́дий Миха́йлович Стрека́лов; October 26, 1940 – December 25, 2004) was an engineer, cosmonaut, and administrator at Russian aerospace firm RSC Energia. He flew into space five times and lived aboard the Salyut-6, Salyut-7, and Mir space stations, spending over 268 days in space. The catastrophic explosion of a Soyuz rocket in 1983 led to him being one of only two people to use a launch escape system.

Maksim Viktorovich Surayev (Russian: Максим Викторович Сураев, born May 24, 1972) is a retired Russian cosmonaut and politician. From December 1997 to November 1999, Surayev completed basic space training. In November 1999 he was qualified as a test-cosmonaut. From January 2000 he was in ISS advanced training. From March 2006 until April 2008 Surayev was assigned as a backup ISS Expedition 17 crewmember. From April 2008 until March 2009 he was a member of the ISS Expedition 19 backup crew.

Arnaldo Tamayo Méndez (born January 29, 1942) is a Cuban military officer, legislator, and former cosmonaut and the first person of African heritage in space. As a member of the crew of Soyuz 38, he became the first Cuban citizen and the first person from a country in the Western Hemisphere other than the United States to travel into Earth orbit.

Evgeny Igorevich Tarelkin (Russian: Евгений Игоревич Тарелкин; born December 29, 1974) is a Russian cosmonaut. He was selected as part of the TsPK-13 group in 2003. He served in the Air Force until his selection as a cosmonaut as part of the TsPK-13 selection group in 2003, completing basic training in 2005. Tarelkin made his first flight into space in October 2012 as a member of the Soyuz TMA-06M crew, during which he spent six months aboard the International Space Station as part of the Expedition 33/34 crews and returned on March 16, 2013.

Valentina Vladimirovna Tereshkova (born 6 March 1937) is a retired Russian cosmonaut, engineer, and politician. She is the first woman to have flown in space, having been selected from more than 400 applicants and five finalists to pilot Vostok 6 on 16 June 1963. In order to join the Cosmonaut Corps, Tereshkova was honorarily inducted into the Soviet Air Force and thus she also became the first civilian to fly in space.

Dr. Gerhard Paul Julius Thiele (born September 2, 1953) is a German physicist and a former ESA astronaut. In 1996, he was selected by the German Space Agency to receive Space Shuttle Mission Specialist training at NASA. In August 1998, he joined the European Space Agency (ESA), into which the German national team was integrated. In 2000, he completed his only spaceflight, the STS-99 Shuttle Radar Topography Mission.

Robert Brent Thirsk, OC OBC (born August 17, 1953) is a Canadian engineer and physician, and a former Canadian Space Agency astronaut. He holds the Canadian records for the longest space flight (187 days 20 hours) and the most time spent in space (204 days 18 hours).