Rostec
| Rostec's headquarters at 24 Usacheva Street in Moscow | |
| Rostec (Ростех) | |
| Native name | Государственная корпорация «Ростех» | 
| Romanized name | Gosudarstvennaya Korporatsiya "Rostekh" | 
| Formerly | Rostekhnologii | 
| Company type | State corporation | 
| Industry | Conglomerate (ISIC: 6420) | 
| Founded | 23 November 2007 | 
| Founder | Vladimir Putin by signed law | 
| Headquarters | , | 
| Area served | Worldwide | 
| Key people | Denis Manturov (Chairman) Sergey Chemezov (CEO) | 
| Revenue | $27.2 billion (2017) | 
| $4 billion (2016) | |
| $1.31 billion (2016) | |
| Owner | Federal Agency for State Property Management | 
| Number of employees | 453,000 (2016) | 
| Divisions | Aircraft, Electronics, Armament | 
| Subsidiaries | See § Organization | 
| Website | www | 
Rostec, formally trading as State Corporation "Rostec", fully the State Corporation for the Promotion of the Development, Manufacture, and Export of High Tech Products "Rostec" and formerly Rostekhnologii, is a Russian state-owned defense conglomerate headquartered in Moscow.
Established in 2007, the organization comprises about 800 enterprises, which together form 15 holding companies: eleven in the defense-industry complex and three in civil sectors. Rostec's organizations are located in 60 constituents of the Russian Federation and supply goods to over 70 countries worldwide.
The organization is headed by Sergey Chemezov, appointed to the position by Russian President Vladimir Putin. The 2014 EU sanctions listing for Chemezov describes how Rostec subsidiaries supported Russia's annexation of Crimea.