| MDR-3 | |
|---|---|
| Role | Arctic Transport Flying Boat |
| National origin | USSR |
| Manufacturer | Chyetverikov |
| Designer | Igor Vyacheslavovich Chyetverikov |
| First flight | January 1932 |
| Number built | 2 |
| Variants | Tupolev ANT-27, Tupolev MDR-4, Tupolev MTB-1 |
The MDR-3 (a.k.a.11) was a long-range flying boat designed and built in the USSR from 1931.