| OMNI LIMITED | Private company limited by shares | Dissolved |
| OMNI CO. LIMITED | Private company limited by shares | Live |
| Omni Art Limited | Private company limited by shares | Live |
| Omni PMP Limited | Private company limited by shares | Live |
| OMNI R&D LIMITED | Private company limited by shares | Live |
| OMNI ONE HK LIMITED | Private company limited by shares | Live |
| OMNI MAX LIMITED | Private company limited by shares | Live |
| OMNIA LIMITED | Private company limited by shares | Dissolved |
| OMNIA MOT LIMITED | Private company limited by shares | Live |
| OMNIA RE LIMITED | Private company limited by shares | Live |
| Omnia Limited | Private company limited by shares | Live |
| OMNIA LIMITED | Private company limited by shares | Live |
| OMNIA CONCEPTS LIMITED | Private company limited by shares | Live |
| OMNIA ENTERPRISE LIMITED | Private company limited by shares | Live |
| OMNIA INVESTMENT LIMITED | Private company limited by shares | Live |
| OMNIACAPITAL LIMITED | Private company limited by shares | Live |
| OMNI-ASIA INTERNATIONAL (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| OMNIAUTO LIMITED | Private company limited by shares | Dissolved |
| Omnibearing Property Limited | Private company limited by shares | Live |
| Omnibloc Limited | Private company limited by shares | Live |
| OMNIBRAND LIMITED | Private company limited by shares | Live |
| OMNIBRAVO LIMITED | Private company limited by shares | Live |
| SUN WAH OMNIBUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMNIBUS LIMITED | Private company limited by shares | Dissolved |
| Lex Omnibus Limited | Private company limited by shares | Live |
| OMNIBUS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CHINA GENERAL OMNIBUS COMPANY LIMITED -THE- | Company limited by guarantee | Dissolved |
| Omnibus Co., Limited | | Live |
| OMNIBUS COLLABORATIVE LIMITED | Private company limited by shares | Live |
| OMNIBUS GRID SOLUTIONS, LIMITED | | Live |
| HANG WAN PUBLIC OMNIBUS LIMITED | Private company limited by shares | Dissolved |
| TAI HING PUBLIC OMNIBUS LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Omnibus Limited | Private company limited by shares | Live |
| PUBLIC OMNIBUS OPERATORS ASSOCIATION LIMITED | Company limited by guarantee | Live |
| OMNIBUZZ LIMITED | Private company limited by shares | Live |
| OMNICAI LIMITED | | Live |
| Omnicare Holdings Limited | Private company limited by shares | Live |
| HONGKONG OMNICARE HEALTH TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OMNICARE INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| Omnicare Pain Centre Limited | Private company limited by shares | Live |
| OMNICARE PHYSIOTHERAPY LIMITED | Private company limited by shares | Live |
| OMNICARE SYSTEM LIMITED | Private company limited by shares | Live |
| Omnicept Limited | | Live |
| Omnichannel Limited | Private company limited by shares | Live |
| ASIA OMNI-CHANNEL RETAIL ASSOCIATION LIMITED | Private company limited by shares | Live |
| Omnicharge Asia Limited | Private company limited by shares | Live |
| Omnichat Limited | Private company limited by shares | Live |
| OMNICHEM (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMNICHEM INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMNICHEM INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Omnicienta Limited | Private company limited by shares | Live |
| Omniclouds Investments Limited | Private company limited by shares | Live |
| OMNICOATINGS LIMITED | | Live |
| OMNI-COM LIMITED | Private company limited by shares | Dissolved |
| OMNICOM LIMITED | Private company limited by shares | Live |
| OMNICOM ENGINEERING LIMITED | Private company limited by shares | Live |
| OMNICOM MEDIA GROUP GREATER CHINA LIMITED | Private company limited by shares | Live |
| OMNICOM INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Omnicom Asia Pacific Limited | Private company limited by shares | Live |
| OmniCom Electrical Works Limited | | Live |
| Omnicon Limited | Private company limited by shares | Live |
| OMNICON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| OMNICON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| OMNICON EVENTS LIMITED | Private company limited by shares | Live |
| OMNICON FREIGHT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| OMNICORP ASIA LIMITED | Private company limited by shares | Dissolved |
| OMNICOURT LIMITED | Private company limited by shares | Dissolved |
| Omnicultural Association Limited | Company limited by guarantee | Live |
| Omnidis Limited | Private company limited by shares | Live |
| OmniDream Limited | | Live |
| OMNIEAVE LIMITED | Private company limited by shares | Live |
| OMNIFI Limited | Private company limited by shares | Live |
| OMNIFIC LIMITED | Private company limited by shares | Dissolved |
| Omnific Corporation Limited | Private company limited by shares | Live |
| OMNIFIC DESIGN & BUILD LIMITED | | Live |
| OMNIFIC GROUP LIMITED | | Live |
| HONGKONG OMNIFIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OMNIFIC INT'L CORPORATION LIMITED | Private company limited by shares | Live |
| OMNIFIC MIRACLES INT'L INDUSTRY LIMITED | Private company limited by shares | Live |
| STUDIO OMNIFIC LIMITED | Private company limited by shares | Live |
| OMNIFIC WORKS LIMITED | Private company limited by shares | Live |
| OMNI-FIT LIMITED | Private company limited by shares | Dissolved |
| OMNIFOAM INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Omniforce (HK) Limited | Private company limited by shares | Live |
| OMNIFORM INVESTMENT LIMITED | Private company limited by shares | Live |
| OMNIFY EXPORTS CO., LIMITED | Private company limited by shares | Live |
| OMNIGATE LIMITED | Private company limited by shares | Dissolved |
| OMNIGEO COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMNIGLOW HONGKONG HOLDINGS LIMITED | Private company limited by shares | Live |
| OMNIGO LIMITED | Private company limited by shares | Live |
| OMNIGOLD LIMITED | Private company limited by shares | Live |
| OMNIGOOD LIMITED | Private company limited by shares | Dissolved |
| OmniGroup (HK) Limited | Private company limited by shares | Live |
| OMNIGSS HK LIMITED | Private company limited by shares | Live |
| OMNIGURU CONSULTANT COMPANY LIMITED | Private company limited by shares | Live |
| OMNIGURU CULTURAL DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Live |
| OMNIHEALTH LIMITED | Private company limited by shares | Live |
| OMNIIGROUP ASIA Limited | Private company limited by shares | Live |
| OmniKara Limited | Private company limited by shares | Live |
| OMNI-KENO ENTERPRISE MANAGEMENT CO., LIMITED | | Live |