| FLAT BE COMPANY LIMITED | Private company limited by shares | Dissolved |
| FLAT 2 LIMITED | Private company limited by shares | Dissolved |
| FLAT COMPANY LIMITED | Private company limited by shares | Live |
| Flat Six Limited | Private company limited by shares | Live |
| A FLAT LIMITED | Private company limited by shares | Dissolved |
| E C FLAT CO. LIMITED | Private company limited by shares | Live |
| FLAT JAY LIMITED | Private company limited by shares | Live |
| Flat Ads Limited | Private company limited by shares | Live |
| R Flat Limited | Private company limited by shares | Live |
| HK FLAT EARTH CO., LIMITED | Private company limited by shares | Live |
| Flat Concept Limited | Private company limited by shares | Live |
| FLAT NEW ENERGY (HK) LIMITED | Private company limited by shares | Dissolved |
| One Fine Flat, Limited | Private company limited by shares | Live |
| FLAT FISH CREATION (HK) COMPANY LIMITED | Private company limited by shares | Live |
| FLAT GLOBE LIMITED | Private company limited by shares | Live |
| FLAT GOLD LIMITED | Private company limited by shares | Dissolved |
| FLAT GUIDE LIMITED | | Live |
| FLAT HEAD LIMITED | | Live |
| Free flat head Consulting Co., Limited | | Live |
| FLAT HILL QUARRY COMPANY, LIMITED | Private company limited by shares | Dissolved |
| Flat (Hong Kong) Investment Co., Limited | Private company limited by shares | Live |
| Flat (Hong Kong) Co., Limited | Private company limited by shares | Live |
| HONG KONG FLAT GLASS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Flat Road Industrial Limited | Private company limited by shares | Live |
| AGC FLAT GLASS (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Flat Media Hong Kong Limited | | Live |
| FLAT WORLD HOME (HONG KONG LIAISON OFFICE) PVT LIMITED | Private company limited by shares | Live |
| HONG KONG KOWLOON FLAT OWNERS ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| Guangdong Flat Panel Display Industry Association Limited | Private company limited by shares | Live |
| FLAT INSPECTION LIMITED | Private company limited by shares | Live |
| FLAT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| FLAT INVESTMENT LIMITED | Private company limited by shares | Live |
| Flat Top Investment Limited | | Live |
| Nantong Tianyuan Flat Knitting Machinery Manufacturer Co., Limited | Private company limited by shares | Live |
| KOREA FLAT CABLE (H.K.) CO., LIMITED | Private company limited by shares | Live |
| Flat Snatch Management Company Limited | Private company limited by shares | Live |
| FLAT SEA MARINE EQUIPMENT LIMITED | Private company limited by shares | Live |
| FLAT MATE STUDIO LIMITED | Private company limited by shares | Live |
| FLAT NINE COMPANY LIMITED | | Live |
| Flat Peaks Limited | | Live |
| Lickpo Plane Flat Generator Limited | Private company limited by shares | Live |
| FLAT PLUTO LIMITED | Private company limited by shares | Live |
| A FLAT PRODUCTION HK LIMITED | | Live |
| A FLAT PRODUCTIONS LIMITED | Private company limited by shares | Live |
| REAR FLAT LIMITED -THE- | Private company limited by shares | Dissolved |
| FLAT AND ROTARY LIMITED | | Live |
| FLAT STANLEY LIMITED | Private company limited by shares | Live |
| SUPER FLAT COMPANY LIMITED | Private company limited by shares | Dissolved |
| FLAT ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TOPANEL FLAT DISPLAY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL F.L.A.T. LIMITED | Private company limited by shares | Dissolved |
| HongTai Universal Flat Trading Limited | Private company limited by shares | Live |
| FLAT WORLD COMPANY LIMITED | Private company limited by shares | Live |
| Flatbeach Limited | Private company limited by shares | Live |
| Flatbread Limited | Private company limited by shares | Live |
| Flatbread Pay Limited | Private company limited by shares | Live |
| FLATBRIDGE COMPANY LIMITED | Private company limited by shares | Live |
| Flatcap Asia Limited | Private company limited by shares | Live |
| FLATCS COMPANY LIMITED | Private company limited by shares | Dissolved |
| FLATFIELD HONG KONG LIMITED | Private company limited by shares | Live |
| FLATFLOAT LIMITED | Private company limited by shares | Live |
| FLATFORD LIMITED | Private company limited by shares | Dissolved |
| FLATFROG LABORATORIES AB LIMITED | Private company limited by shares | Live |
| FLATIN TRADING LIMITED | Private company limited by shares | Dissolved |
| FLATIRON LIMITED | Private company limited by shares | Dissolved |
| FLATIRON ASIA LIMITED | Private company limited by shares | Dissolved |
| Flatiron Associates Limited | Private company limited by shares | Live |
| FLATIRON TRADING LIMITED | Private company limited by shares | Dissolved |
| Flatlands (Hong Kong) Co., Limited | Private company limited by shares | Live |
| FLATMIND LIMITED | Private company limited by shares | Live |
| PATERSON STREET AREA FLAT-OWNERS ASSOCIATION, LIMITED | Company limited by guarantee | Live |
| Flatrock Management Limited | Private company limited by shares | Live |
| FLATRON TRADING LIMITED | Private company limited by shares | Dissolved |
| Flats Connection Vision Co., Limited | | Live |
| HICKORY FLATS LIMITED | Private company limited by shares | Live |
| HONG KONG FLATS LIMITED | Private company limited by shares | Live |
| HONG KONG SERVICE FLATS LIMITED | Private company limited by shares | Dissolved |
| BID FLATS INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Lamma Flats Limited | Private company limited by shares | Live |
| MAIN FLATS INVESTMENTS COMPANY, LIMITED | Private company limited by shares | Dissolved |
| MOUNT FLATS INVESTMENTS COMPANY, LIMITED | Private company limited by shares | Dissolved |
| MULTI FLATS INVESTMENTS COMPANY, LIMITED | Private company limited by shares | Dissolved |
| FLATSAPP COMPANY LIMITED | Private company limited by shares | Live |
| FLATSLOW CO., LIMITED | Private company limited by shares | Live |
| FLATSTONE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FLATTER BASE LIMITED | Private company limited by shares | Live |
| FLATVIGATOR MULTIMEDIA LIMITED | Private company limited by shares | Dissolved |
| FLATWAY COMPANY LIMITED | Private company limited by shares | Live |
| FLATWORLD BIZ LIMITED | Private company limited by shares | Live |
| Flatworldgo Limited | | Live |