COSMOS 731 DEB
| Launched | 20 May 1975 | 
| Flight ended | 8 June 1975 | 
| Status | Decayed | 
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) | 
| Owner | Commonwealth of Independent States (former USSR) | 
| NORAD ID | 7880 | 
| COSPAR ID | 1975-041F | 
| Observing | 
Launched alongside
COSMOS 731 SL-4 R/B SL-4 DEB SL-4 DEB COSMOS 731 DEB COSMOS 731 DEB COSMOS 731 DEB