| Kosmos 1074 | |
| Mission Type: | Orbital test flight |
| Operator: | Soviet space program |
| Cospar Id: | 1979-008A |
| Satcat: | 11259 |
| Spacecraft: | Soyuz-T s/n 5L |
| Spacecraft Type: | Soyuz 7K-ST (11F732) |
| Manufacturer: | NPO Energia |
| Launch Mass: | 6450kg (14,220lb) |
| Launch Date: | GMT |
| Launch Rocket: | Soyuz-U |
| Launch Site: | Baikonur 31/6 |
| Disposal Type: | Deorbited |
| Landing Date: | GMT |
| Orbit Reference: | Geocentric |
| Orbit Periapsis: | 1950NaN0 |
| Orbit Apoapsis: | 2380NaN0 |
| Orbit Inclination: | 51.6° |
| Orbit Period: | 88.8 min |
| Apsis: | gee |
| Programme: | Soyuz programme |
| Previous Mission: | Soyuz 31 |
| Next Mission: | Soyuz 32 |
| Programme2: | Kosmos (satellites) |
| Previous Mission2: | Kosmos 1073 |
| Next Mission2: | Kosmos 1075 |
Kosmos 1074 (Russian: Космос 1074 meaning Cosmos 1074) was a Soviet unmanned long-duration test flight of the Soyuz-T spacecraft launched on January 31, 1979 and de-orbited on April 1, 1979. It is the last Soyuz spacecraft that has received a Kosmos designation, and its mission is officially intended to investigate the upper atmosphere and outer space