| 3G-SYSTEM LIMITED | Private company limited by shares | Live |
| 3GTV (HONG KONG) LIMITED | Private company limited by shares | Live |
| 3GUU Network Entertainment Co. Limited | Private company limited by shares | Dissolved |
| 3GVISIONS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| 3H2M Company Limited | Private company limited by shares | Live |
| 3-H.C. Pharmatech Limited | Private company limited by shares | Live |
| 3HDraft Limited | Private company limited by shares | Live |
| 3hiba (MCP) Limited | Private company limited by shares | Live |
| 3HODL Limited | | Live |
| 3HODL Technology Limited | | Live |
| 3HOYING LIMITED | | Live |
| 3iBuy Company Limited | Private company limited by shares | Live |
| 3ICORE CO., LIMITED | Private company limited by shares | Live |
| 3IDE ART LIMITED | Private company limited by shares | Live |
| 3INDIGO LIMITED | Private company limited by shares | Dissolved |
| 3ING INDUSTRIAL LIMITED | Private company limited by shares | Live |
| 3isterhood Company Limited | Private company limited by shares | Live |
| 3.J. GROUP (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| 3JETSO TELECOMMUNICATION LIMITED | Private company limited by shares | Live |
| 3J'S (HK) LIMITED | Private company limited by shares | Live |
| 3J's Music & Entertainment Co., Limited | | Live |
| 3Knights Limited | Private company limited by shares | Live |
| 3Lancer Limited | Private company limited by shares | Dissolved |
| 3LC-HK LIMITED | Private company limited by shares | Live |
| 3LINK COMPANY LIMITED | Private company limited by shares | Live |
| 3LINK ASIA LIMITED | Private company limited by shares | Live |
| 3Link Solutions Limited | Private company limited by shares | Live |
| 3LOC LIMITED | Private company limited by shares | Live |
| HONGKONG 3-LONG FURNITURE CO., LIMITED | Private company limited by shares | Dissolved |
| 3-LUEN WEAVING LIMITED | Private company limited by shares | Dissolved |
| 3MALES LIMITED | Private company limited by shares | Live |
| 3MAN LIMITED | Private company limited by shares | Live |
| 3MAN HOLDING CO. LIMITED | Private company limited by shares | Live |
| 3MAN SEMICONDUCT LIMITED | Private company limited by shares | Live |
| 3-MART LIMITED | Private company limited by shares | Live |
| 3men Education International Company Limited | Private company limited by shares | Dissolved |
| 3mhnetworks Limited | Private company limited by shares | Live |
| 3Mind Concepts Limited | Private company limited by shares | Live |
| 3MindWave Limited | Private company limited by shares | Live |
| 3minstest Limited | Private company limited by shares | Live |
| 3mints Limited | Private company limited by shares | Live |
| 3Minute Hong Kong Co., Limited | Private company limited by shares | Live |
| 3-minute-passion Limited | Private company limited by shares | Live |
| 3Monkeys Limited | Private company limited by shares | Live |
| 3-MORE PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| 3Mtek innovation company Limited | Private company limited by shares | Live |
| 3ninjas Education Limited | Private company limited by shares | Live |
| 3NITY HK LIMITED | Private company limited by shares | Dissolved |
| 3okenise Limited | | Live |
| 3omewhere Studio Limited | | Live |
| 3ONEDATA GROUP LIMITED | Private company limited by shares | Dissolved |
| 3.OTC Limited | | Live |
| 3PAR HONG KONG LIMITED | Private company limited by shares | Dissolved |
| 3-Pax Company Limited | Private company limited by shares | Live |
| 3pay Limited | Private company limited by shares | Live |
| 3PCS LIMITED | Private company limited by shares | Dissolved |
| 3percent Limited | Private company limited by shares | Live |
| 3Photo Limited | | Live |
| 3picy Musketeers Limited | | Live |
| 3PIGS E-COMMERCE LIMITED | | Live |
| 3-PLUS AD LIMITED | Private company limited by shares | Dissolved |
| 3plus1 Limited | | Live |
| 3points Company Limited | Private company limited by shares | Live |
| 3Points Limited | Private company limited by shares | Live |
| 3Points Compliance Consulting Limited | | Live |
| 3Points Production LIMITED | Private company limited by shares | Live |
| 3PRO OFFICE SOLUTIONS COMPANY LIMITED | Private company limited by shares | Live |
| 3psystem Limited | Private company limited by shares | Live |
| 3Q'S INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| 3QUOTES LIMITED | Private company limited by shares | Live |
| 3RABBITS LIMITED | | Live |
| 3RACING Technology Limited | Private company limited by shares | Live |
| 3RBAGS CO., LIMITED | Private company limited by shares | Live |
| 3Rder Limited | Private company limited by shares | Live |
| 3rend Limited | | Live |
| 3REVOLUTION Co. Limited | Private company limited by shares | Live |
| SHENZHEN 3RGBLED PHOTOGRAPHY CO., LIMITED | | Live |
| 3Ride(HK) Limited | Private company limited by shares | Live |
| 3RIVER FOUNDATION CO., LIMITED | Private company limited by shares | Live |
| 3River International (HK) Industrial Co., Limited | Private company limited by shares | Live |
| 3Rivers Trading Hong Kong Limited | | Live |
| 3R-LIMITED | Private company limited by shares | Dissolved |
| 3Road Limited | Private company limited by shares | Live |
| 3rust Limited | | Live |
| 3Safe Limited | Private company limited by shares | Live |
| 3Scents Company Limited | Private company limited by shares | Live |
| 3Screen Group Limited | Private company limited by shares | Live |
| 3Self Limited | Private company limited by shares | Live |
| 3s-energy Limited | | Live |
| 3SHEEP COMPANY LIMITED | Private company limited by shares | Dissolved |
| 3.Shopaholic Asia Limited | Private company limited by shares | Live |
| Lawrence Li 3SIX Concept Limited | | Live |
| 3.six.5 Limited | Private company limited by shares | Live |
| 3SIXT LIMITED | Private company limited by shares | Live |
| 3sixty Limited | Private company limited by shares | Live |
| 3SON PRODUCTION LIMITED | Private company limited by shares | Live |
| 3space Limited | Company limited by guarantee | Live |
| 3STARS LIMITED | Private company limited by shares | Live |
| 3STARS MANUFACTORY LIMITED | Private company limited by shares | Live |
| 3STEPS LIMITED | Private company limited by shares | Live |