| CRYPTOLUSSO OÜOÜPrivate limited company | 14724500 | – | 16.05.20197 yrs |
| Cryptoking OÜOÜPrivate limited company | 14441357 | Tartu linnTartu maakond | 05.03.20188 yrs |
| CryptoInvestGroup OÜOÜPrivate limited company | 14499279 | – | 31.05.20188 yrs |
| CryptoGator OÜOÜPrivate limited company | 14771221 | TallinnHarju maakond | 29.07.20197 yrs |
| Cryptofinity OÜOÜPrivate limited company | 14447495 | TallinnHarju maakond | 13.03.20188 yrs |
| CryptoBanque OÜOÜPrivate limited company | 14478805 | – | 27.04.20188 yrs |
| Cryptassist OÜOÜPrivate limited company | 14515860 | TallinnHarju maakond | 28.06.20188 yrs |
| CRS_FX OÜOÜPrivate limited company | 16957237 | TallinnHarju maakond | 02.04.20242 yrs |
| CrowdFundJunction OÜOÜPrivate limited company | 14604019 | TallinnHarju maakond | 12.11.20187 yrs |
| Cross-Stone Invest OÜOÜPrivate limited company | 17038515 | Saaremaa valdSaare maakond | 30.07.20242 yrs |
| Croissance OÜOÜPrivate limited company | 17041865 | TallinnHarju maakond | 05.08.20242 yrs |
| Cristy Capital OÜOÜPrivate limited company | 17403713 | TallinnHarju maakond | 02.01.20260 yrs |
| Crescent Solutions OÜOÜPrivate limited company | 14734243 | TallinnHarju maakond | 30.05.20197 yrs |
| Credory OÜOÜPrivate limited company | 16102889 | TallinnHarju maakond | 20.11.20205 yrs |
| Creditstar International OÜOÜPrivate limited company | 12022389 | TallinnHarju maakond | 23.11.201015 yrs |
| Creditstar Group ASASPublic limited company | 11728905 | TallinnHarju maakond | 05.10.200916 yrs |
| CreditPartner OÜOÜPrivate limited company | 12288519 | TallinnHarju maakond | 21.05.201214 yrs |
| CPS Solutions OÜOÜPrivate limited company | 16063623 | TallinnHarju maakond | 29.09.20205 yrs |
| Counterpoint Studio OÜOÜPrivate limited company | 14679449 | – | 11.03.20197 yrs |
| Cottage Fund OÜOÜPrivate limited company | 16482633 | TallinnHarju maakond | 18.04.20224 yrs |
| Cosmos VC OÜOÜPrivate limited company | 14775756 | TallinnHarju maakond | 05.08.20197 yrs |
| Cosmosinteractive OÜOÜPrivate limited company | 16221387 | – | 03.05.20215 yrs |
| Coscy OÜOÜPrivate limited company | 12960411 | TallinnHarju maakond | 08.12.201510 yrs |
| CorpLiquidator OÜOÜPrivate limited company | 14776030 | TallinnHarju maakond | 06.08.20197 yrs |
| CORP FIDUCIARY OÜOÜPrivate limited company | 12311308 | TallinnHarju maakond | 06.07.201214 yrs |
| Corenex Nord OÜOÜPrivate limited company | 16154053 | TallinnHarju maakond | 04.02.20215 yrs |
| Core Cyber Capital OÜOÜPrivate limited company | 14534550 | TallinnHarju maakond | 27.07.20188 yrs |
| Cordero Arkus OÜOÜPrivate limited company | 17357278 | TallinnHarju maakond | 24.10.20250 yrs |
| Corales OÜOÜPrivate limited company | 16169965 | Tartu linnTartu maakond | 25.02.20215 yrs |
| CoolDex Global OÜOÜPrivate limited company | 14697329 | – | 04.04.20197 yrs |