| Company name | Reg. code |
|---|---|
| CITION OÜ (former name Cition UÜ) | 16397755 |
| CITRON OÜ kustutatud | 14602582 |
| CITRON GURMANDE OÜ | 12753093 |
| CITRONE OÜ kustutatud | 12051356 |
| CITLOM OÜ kustutatud (former name OneInnovations OÜ) | 12998328 |
| CITROL OÜ | 10376829 |
| CITIUS INVEST OÜ | 12213735 |
| CITIZEN TECH OÜ kustutatud | 16176155 |
| CITRINO TRADING OÜ kustutatud | 12756128 |
| CITIZEN KAIZEN OÜ kustutatud (former name Xenofox OÜ) | 14440040 |
| CLEVER CITIES OÜ | 16539959 |
| CITRIN GRUPP OÜ | 12657194 |
| CITIZEN GREEN OÜ kustutatud | 14512175 |
| CITIUS A.P. OÜ | 10274939 |
| CITYCON BALTICS HOLDING OÜ kustutatud (former name Kristiine Keskus OÜ) | 12063655 |
| CLEVER CITIES GROUP OÜ | 16707701 |
| CATION OÜ | 14415756 |
| CESTION OÜ kustutatud | 11388208 |
| 4MATION OÜ kustutatud | 14145305 |
| HITMON OÜ kustutatud | 11328413 |
| ARTION OÜ kustutatud | 14817650 |
| COTTON OÜ | 12424656 |
| INITION OÜ | 12084597 |
| MINION OÜ | 12191838 |
| EDITION 56 OÜ kustutatud | 11981142 |
| BINION OÜ | 10953511 |
| KIXION OÜ | 17219352 |
| CIRKON OÜ | 10734370 |
| BITRON OÜ | 11387479 |
| LITIQON OÜ | 17126355 |
| MOTION OÜ | 16152373 |
| MOTION OÜ kustutatud | 12602170 |
| KITOON OÜ | 10000610 |
| MIRION OÜ | 12726587 |
| KITRON OÜ kustutatud | 12560282 |
| EDITION 49 OÜ | 10687363 |
| CAMION OÜ | 11235232 |
| CIVICON OÜ | 14946212 |
| MITTON OÜ | 12561324 |
| LILION OÜ | 16441443 |
| CITIC EHITUS OÜ | 12248410 |
| CITO OÜ | 12596535 |
| TDV EDITION OÜ | 14695454 |
| MIRION TECH OÜ | 17217034 |
| MOTION MOTORS OÜ | 17341567 |
| CREATE ACTION OÜ | 14676468 |
| JYR EDITION OÜ | 14110554 |
| WORLDWIDE FICTION OÜ kustutatud | 14779228 |
| WEB EDITION OÜ | 12783645 |
| MOTION MIRACLES OÜ | 14511550 |