| Name | Region |
|---|---|
| Reactive Phone | |
| ReactOS | Stavropol |
| Reallysoft | Moscow |
| RebroNet | Moscow |
| RedLab.Dev | |
| RedStone Capital | |
| REES46 | Moscow |
| ReflexIT Studio | Moscow |
| REFOG | Pskov |
| REG.RU LLC | Moscow |
| Regard-soft | Moscow |
| Rekrutor | |
| Reksoft | Moscow |
| ReMarked | |
| Remobil.net | Moscow |
| RentaTeam | |
| Repl Soft | Kirov |
| Resetters | Moscow |
| RespectSoft | Moscow |
| ReviewSoft.ru | Moscow |
| Rhonda Ltd | Primorsky |
| RHSoft | |
| Rightech | |
| Rikor Electronics | Moscow |
| Rissoft | Moscow |
| RITG | Ulyanovsk |
| Riverstart | |
| Robo.finance | |
| RoboCV | |
| robotDialog | |
| RoboZone.SU | Moscow |
| Rock Apps | |
| RocketDev | |
| Roofit.Solar | |
| Roonyx | Rostov |
| Roskomnadzor | |
| Rostsoft | Moscow |
| Roxot | |
| RozumSoft | Moscow |
| RP-Studio | Donetsk People's Republic |
| RS Software Lab | Tyumen |
| RTCloud | |
| RTP Global | Moscow |
| RU Linux | Moscow |
| RU-Center | Moscow |
| Rubbles | |
| ruDALL-E | |
| Run Capital | |
| RunCall | |
| Rupixel.com | Arkhangelsk |