Valentina Vladimirovna Tereshkova is a Russian engineer, member of the State Duma, and former Soviet cosmonaut. She was the first woman in space, having flown a solo mission on Vostok 6 on 16 June 1963. She orbited the Earth 48 times, spent almost three days in space, is the only woman to have been on a solo space mission and is the last surviving Vostok programme cosmonaut. She was the youngest woman to fly in space until 2023 when Anastatia Mayers flew on Galactic 02 at the age of 18. Since Mayers flew a suborbital mission, Tereshkova remains the youngest woman to fly in Earth orbit.

Vostok 6 was the first human spaceflight to carry a woman, cosmonaut Valentina Tereshkova, into space.