| Downtown Music Holdings (HK) Limited | Private company limited by shares | Live |
| DOWNTOWN HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Hottest Downtown Limited | | Live |
| DOWNTOWN INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| DOWNTOWN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| DOWNTOWN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Downwell Catering Company Limited | | Live |
| DoWo Disinfection Limited | Private company limited by shares | Live |
| DOWONE ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| DOWONSOL INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| DOWOOD LIMITED | Private company limited by shares | Dissolved |
| DOWORK PUBLISHING CO., LIMITED | Private company limited by shares | Live |
| DOWORLD LIMITED | Private company limited by shares | Dissolved |
| DOWSENG LIMITED | Private company limited by shares | Live |
| DOWSER LIMITED | Private company limited by shares | Live |
| DOWSETT LIMITED | Private company limited by shares | Live |
| DOWSIE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| DOWSLAKE MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| DOWSLAKE VENTURE LIMITED | Private company limited by shares | Dissolved |
| DOWSON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| DOWSTONE LIMITED | Private company limited by shares | Dissolved |
| DOWSTONE HK LIMITED | | Live |
| JAPAN DOWSUN MECHANICAL AND ENGINEERING INVESTMENT CORPORATION (HONG KONG) LIMITED -THE- | Private company limited by shares | Dissolved |
| Dowsure Hong Kong Limited | Private company limited by shares | Live |
| DOWTECH COMPANY LIMITED | Private company limited by shares | Live |
| DOWWIN INVESTMENT LIMITED | Private company limited by shares | Live |
| DOX360 LIMITED | Private company limited by shares | Dissolved |
| DOXA COMPANY LIMITED | Private company limited by shares | Live |
| DOXA Enterprises Limited | Private company limited by shares | Live |
| DOXEE CO., LIMITED | | Live |
| DOXEN TRADING LIMITED | Private company limited by shares | Live |
| DOXON COMPANY LIMITED | Private company limited by shares | Dissolved |
| DOXRA LIMITED | Private company limited by shares | Live |
| United Doxu Limited | Private company limited by shares | Live |
| DOYAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| GOLD DOYAL ENTERPRISE LIMITED | | Live |
| DOYE CO. LIMITED | Private company limited by shares | Live |
| HK DOYE INT'L GROUP CO., LIMITED | Private company limited by shares | Live |
| DOYEA TRADING LIMITED | Private company limited by shares | Live |
| Doyen Limited | Private company limited by shares | Live |
| DOYEN PLASTIC COLOURANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| MACAO DOYEN INTERNATIONAL GROUP ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| DOYGOLD LIMITED | Private company limited by shares | Live |
| Doyin Technologies (HK) Limited | Private company limited by shares | Live |
| DOYIN INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Doyle Limited | Private company limited by shares | Live |
| ALEX DOYLE LIMITED | Private company limited by shares | Dissolved |
| DOYLE ASIA LIMITED | Private company limited by shares | Live |
| Doyle Capital Limited | Private company limited by shares | Live |
| DOYO LIMITED | | Live |
| Doyoga Limited | | Live |
| DOYOGA SPORTS HK LIMITED | Private company limited by shares | Live |
| DOYONO TRADING CO., LIMITED | | Live |
| DOYOU INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Doyoung Company Limited | | Live |
| DoYoung Fresh Cell Anti-aging Therapy (Asia Pacific) Service Center Limited | Private company limited by shares | Live |
| DOYOUTRAVEL LIMITED | Private company limited by shares | Live |
| DOYU HONGKONG LIMITED | Private company limited by shares | Live |
| HK DOYUAN INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| DOYUK TECHNOLOGY & PROMOTION CO., LIMITED | Private company limited by shares | Live |
| AIKIDO DOYUKAI (HONG KONG) LIMITED | Private company limited by shares | Live |
| DOYUSHA (HONG KONG) CO., LIMITED | Private company limited by shares | Dissolved |
| DOZE LIMITED | Private company limited by shares | Live |
| DOZEN LIMITED | Private company limited by shares | Dissolved |
| HALF A DOZEN LIMITED | Private company limited by shares | Live |
| DOZENBIRD LIMITED | Private company limited by shares | Live |
| DOZENS WINFUL LIMITED | Private company limited by shares | Dissolved |
| Dozensmart Limited | Private company limited by shares | Live |
| DOZENTH 2 DESIGN LIMITED | Private company limited by shares | Live |
| DOZENWAY LIMITED | Private company limited by shares | Dissolved |
| DOZEY OATES TRADING LIMITED | Private company limited by shares | Dissolved |
| HONGKONG DENNIS AND DOZIE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DOZIER LIMITED | Private company limited by shares | Dissolved |
| DOMO & DOZO LIMITED | Private company limited by shares | Live |
| Dozo Group Limited | Private company limited by shares | Live |
| DOZO INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| DOZTRADING LIMITED | Private company limited by shares | Live |
| DOZZAMUN COMPANY LIMITED | Private company limited by shares | Dissolved |
| DOZZO CO., LIMITED | Private company limited by shares | Live |