Kosmos 772 (Russian: Космос 772 meaning Cosmos 772) was an unmanned military Soyuz 7K-S test. It was an unsuccessful mission as only one transmitter worked. Only the 166 MHz frequency transmitter operated, all of the other normal Soyuz wavelengths transmitters failed.  The experience from these flights were used in the development of the successor program Soyuz spacecraft the Soyuz 7K-ST. 
- Spacecraft: Soyuz 7K-S
- Mass: 6750 kg
- Crew: None
- Launched: September 29, 1975
- Landed: October 3, 1975 4:10 UTC
- Perigee: 154 km
- Apogee: 245 km
- Inclination: 51.8 deg
- Duration: 3.99 days
- 193 km X 270 km orbit to 195 km X 300 km orbit. Delta V: 8 m/s.
- 196 km X 300 km orbit to 196 km X 328 km orbit. Delta V: 8 m/s.
Total Delta V: 16 m/s.
- astronautix.com, Soyuz 7K-S
- Soviet Space Programs, 1976-80: Manned space programs and space life sciences
- friends-partners.org soyuz7ks
- astronautix.com soyuz7k-s
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- Sanchez, Merri J. (March 2000). "A Human Factors Evaluation of a Methodology for Pressurized Crew Module Acceptability for Zero-Gravity Ingress of Spacecraft" (PDF). Houston, Texas: Lyndon B. Johnson Space Center. p. 8. Archived from the original (PDF) on 2006-10-05. Retrieved 2007-10-20.
- Evans, Ben (September 28, 2013). "'We Were Swearing!' Thirty Years Since Russia's Brush With Disaster". Retrieved 2014-01-24.
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