Yang Liwei is a major general, military pilot, and China National Space Administration astronaut. In October 2003, he became the first person sent into space by the Chinese space program. This mission, Shenzhou 5, made China the third country to independently send humans into space.

Boris Borisovich Yegorov was a Soviet physician-cosmonaut who became the first physician to make a space flight. Yegorov was selected as a member of the multi-disciplinary team that flew on Voskhod 1.

Kimiya Yui is a Japanese astronaut from the Japan Aerospace Exploration Agency (JAXA). He was selected for the agency in 2009.

Fyodor Nikolayevich Yurchikhin (Russian: Фёдор Николаевич Юрчихин, Greek: Θεόδωρος Γιουρτσίχιν του Νικόλαου; born 3 January 1959), is a Russian cosmonaut of Greek descent, engineer and RSC Energia test-pilot who has flown on five spaceflights. His first spaceflight was a 10-day Space Shuttle mission STS-112. His second was a long-duration stay aboard the International Space Station (ISS) as a Flight Engineer for Expedition 15; for this mission he was launched in the Soyuz TMA-10 spacecraft. He has undertaken two further long-duration stays aboard the ISS, as a crew member of Expedition 24 / 25. For this mission he was launched with the spacecraft Soyuz TMA-19, and he landed in November 2010, also with the TMA-19 spacecraft. He served as Soyuz Commander for his fourth mission aboard Soyuz TMA-09M, as Flight Engineer for Expedition 36 and ISS Commander for Expedition 37. In April 2017, Yurchikhin launched on Soyuz MS-04 for the fifth spaceflight of his career, a six-month mission to the ISS as part of Expedition 51 and 52, for which he was the Commander.

Sergei Viktorovich Zalyotin is a Russian cosmonaut and a veteran of two space missions. Zalyotin was born in Tula and attended the Borisoglebsk Higher Military School before becoming a fighter pilot in the Russian Air Force. He also holds a degree in ecological management. Zalyotin was selected as a cosmonaut candidate in 1990. In 2000, Zalyotin was a member of the final resident crew aboard the Mir space station. He briefly visited the International Space Station aboard Soyuz TMA-1 in 2002.

Zhai Zhigang (born October 10, 1966) is a major general in the People's Liberation Army Air Force and a CNSA astronaut. During the Shenzhou 7 mission in 2008, he became the first Chinese citizen to carry out a spacewalk.

Zhang Xiaoguang is a Chinese pilot selected as part of the Shenzhou program. He was born in May 1966 in Jinzhou, to a family of Manchu ethnicity and was a squadron commander in the People’s Liberation Army Air Force when he was selected to be an astronaut in 1998. He had accumulated 1000 flight-hours as of 2004. He was selected as part of the backup crew for the Shenzhou 9 mission. In 2013, he was selected to fly Shenzhou 10, the third spaceflight to the first Chinese space station Tiangong 1.

Vitaly Mikhaylovich Zholobov (Russian: Виталий Михайлович Жолобов; born 18 June 1937) is a retired Soviet cosmonaut who flew on Soyuz 21 space flight as the flight engineer.

Vyacheslav Dmitriyevich Zudov is a retired USSR cosmonaut. He was selected as a cosmonaut on 23 October 1965, flew as Commander on Soyuz 23 on 14–16 October 1976 and retired on 14 May 1987.

Alfred Merrill "Al" Worden is an American astronaut and engineer who was the Command Module Pilot for the Apollo 15 lunar mission in 1971. He is one of only 24 people to have flown to the Moon.

Vance DeVoe Brand is an American former naval officer and aviator, aeronautical engineer, test pilot, and NASA astronaut. He served as Command Module Pilot during the first U.S.-Soviet joint spaceflight in 1975, and as Commander of three Space Shuttle missions. His flight experience includes 9,669 flying hours, which includes 8,089 hours in jets, 391 hours in helicopters, 746 hours in spacecraft, and checkout in more than 30 types of military aircraft. Vance Brand Airport in Longmont, Colorado, is named in his honor.

John Sumter Bull, Ph.D. was an American naval officer and aviator, fighter pilot, test pilot, mechanical and aeronautical engineer, and NASA astronaut.