
The Bion satellites, also named Biocosmos, is a series of Soviet biosatellites focused on space medicine. They are part of the Kosmos satellites.

Bion-M No.1 (Бион-М) is a Russian space mission, part of the Bion programme focused on space medicine. The new generation Bion-M continues the Soviet/Russian satellite programme aimed at biological research in space. The most recent spacecraft of the series, Bion 11, was launched in 1996. The Bion-M1 spacecraft is designed to carry biological, physiological and biotechnological experiments to low Earth orbit and return them to Earth at the end of the mission. The biological payload for Bion-M1 includes rodents, amphibians, reptiles, crustaceans, mollusks, fish, insects, bacteria, plant and animal cell cultures. The spacecraft is the result of collaboration hosting biomedical payloads provided by scientific institutions from the United States, Germany, Canada, the Netherlands, Poland and other countries. The Bion-M automated spacecraft is a unique specialized space complex that will help determine the fundamental mechanisms of how life adapts to microgravity and then readapts to Earth-normal gravity.

Kosmos 690, or Bion 2, was a Bion satellite launched by the Soviet Union.

Kosmos 782 was a Bion satellite. It carried 14 experiments prepared by seven countries in all, with participation from scientists in France, Czechoslovakia, Hungary, Poland, Romania, United States and the Soviet Union.

Kosmos 936 or Bion 4 was a Bion satellite. The mission involved nine countries in a series of biomedical research experiments. The experiments were primarily follow-ups to the Bion 3 flight. Scientists from the Bulgaria, Czechoslovakia, East Germany, France, Hungary, Poland, Romania, the United States and the Soviet Union conducted experiments in physics and biology on the mission.

Bion 5, or also Kosmos 1129 was a Bion satellite. It was a biomedical research mission involving scientists from nine countries, launched on 29 September 1979, at 15:30:00 UTC. Among the experiments was the first attempt to breed mammals in space, which proved unsuccessful. The mission ended after 18.5 days, on 14 October 1979, at 02:24 UTC. The mission had the cooperation of the Bulgaria, Czechoslovakia, East Germany, France, Hungary, Poland, Romania, the United States and the Soviet Union.

Kosmos 1514 or Bion 6 was a biomedical research mission that was launched on 14 December 1983, at 07:00:00 UTC. It was part of the Bion programme.

Kosmos 1667, or Bion 7 was a biomedical research mission satellite involving scientists from nine countries. It was part of the Bion program. This mission was the scientific participation of nine countries.

Bion 8 or Kosmos 1887 was a Bion satellite.

Kosmos 2044, or Bion 9 was a biomedical research mission involving in nine countries plus ESA: United Kingdom, Hungarian People's Republic, East Germany, Polish People's Republic, Czechoslovakia, United States, Canada, Australia, Soviet Union and European Space Agency (ESA). It was part of the Bion program.

Kosmos 2229, or Bion 10 was a biomedical research mission involving in ten countries plus European Space Agency (ESA). A Russian spacecraft, was launched by a Soyuz-U launch vehicle from the Plesetsk Cosmodrome. It was part of the Bion programme.