A US space programme (1965–6) in which astronauts practised rendezvous and docking of spacecraft, and working outside their spacecraft, in preparation for the Apollo project Moon landings.

Gemini spacecraft carried two astronauts and were launched by Titan rockets. Flights were designated by the double name Gemini–Titan.

The meeting of Gemini 7 with Gemini 6 in 1965 was the first rendezvous between two spacecraft.