| TAYLOR NELSON SOFRES HONG KONG LIMITED | Private company limited by shares | Live |
| LUK SHIU HIM AND SONS LIMITED | Private company limited by shares | Live |
| SIU HON SUM & SONS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SOMERTON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SOCIETY FOR THE DEAF -THE- | Company limited by guarantee | Live |
| SOUCROSS LIMITED | Private company limited by shares | Live Commenced dormancy on 16-Mar-2004 |
| SONIC MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| T.S. CHENG & SONS LIMITED | Private company limited by shares | Live |
| SOYAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| PRIMARY SOURCES LIMITED | Private company limited by shares | Dissolved |
| LAI LEUNG & SONS INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHOW JOI FATHER & SONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| LENT & SONS, COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW SOLID ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SONET SECRETARIES LIMITED | Private company limited by shares | Live |
| SONATA LIMITED | Private company limited by shares | Live |
| SOLOMON TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| SONITON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SONCA PROVIDENT FUND LIMITED | Private company limited by shares | Dissolved |
| SOLANO COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOBHRAJ SONS (H.K.) LIMITED | Private company limited by shares | Live |
| A SOUND INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOBOL SOUND SUPPLIES LIMITED | Private company limited by shares | Live |
| SOLAR TIME LIMITED | Private company limited by shares | Live |
| HONG KONG SOCIETY OF NOTARIES | Company limited by guarantee | Live |
| SOGOD COMPANY LIMITED | Private company limited by shares | Dissolved |
| HSU & SONS LIMITED | Private company limited by shares | Dissolved |
| SORRENTO COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOARING SUCCESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| GOLDEN WEALTH SOUND SERVICE LIMITED | Private company limited by shares | Dissolved |
| SONGSON COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOPAC LIMITED | Private company limited by shares | Dissolved |
| SOLID FOUNDATION INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| FATHER & SONS LIMITED | Private company limited by shares | Dissolved |
| SOUVENIR COMPANY LIMITED | Private company limited by shares | Live |
| SOMMAIRE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GIGA SONIC (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| TSE YUEN & SONS COMPANY LIMITED | Private company limited by shares | Live |
| SOUTHWINDS LAND & INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOCORO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| NGAI KEE & SONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND MASTER LABS LIMITED | Private company limited by shares | Dissolved |
| T. Y. HO AND SONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUTHLAND WEAVING FACTORY LIMITED | Private company limited by shares | Dissolved |
| C. SOON INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOLID GROWTH (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Sony DADC Hong Kong Limited | Private company limited by shares | Live |
| SONLIET INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| LEE YUN & SONS LIMITED | Private company limited by shares | Dissolved |
| CINE SOUND LIMITED | Private company limited by shares | Dissolved |
| Swisstec Sourcing Limited | Private company limited by shares | Live |
| SOPENBA LIMITED | Private company limited by shares | Dissolved |
| YEE HON MAN & SONS CO., LIMITED | Private company limited by shares | Dissolved |
| Y. C. LEE & SONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| S. K. CHENG & SONS INVESTMENT LIMITED | Private company limited by shares | Live |
| SOTELO LIMITED | Private company limited by shares | Dissolved |
| KAM LENG AND SONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| J. & R. LINDSAY & SONS LIMITED | Private company limited by shares | Dissolved |
| AIR SOLAR LIMITED | Private company limited by shares | Dissolved |
| SONIC CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW SOURCE TEXTILES COMPANY LIMITED | Private company limited by shares | Dissolved |
| YEO CHEI MAN AND SONS COMPANY LIMITED | Private company limited by shares | Live |
| SOLEX OPTICAL ELECTRONICS LIMITED | Private company limited by shares | Live |
| FU HONG SOCIETY | Company limited by guarantee | Live |
| SOIL SPECIALIST CONTRACTORS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SOUTHEAST ASIA-HONG KONG COOPERATION LIMITED | Private company limited by shares | Dissolved |
| PRODUCT SOURCES AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| K. F. CHENG & SONS COMPANY, LIMITED | Private company limited by shares | Live |
| SOUTHCOTE GENERAL MERCHANTS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SOUND WAY INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUTHRALE LIMITED | Private company limited by shares | Dissolved |
| SOUTHBRIDGE LIMITED | Private company limited by shares | Live |
| SOPROMA COMPANY LIMITED | Private company limited by shares | Live |
| SOCIETY OF OPTICIANS LIMITED | Company limited by guarantee | Dissolved |
| SORA INVESTMENT LIMITED | Private company limited by shares | Live |
| SOLID CAPITAL HOLDINGS LIMITED | Private company limited by shares | Live |
| SOUNDENJOY ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOPHISTRONIC LIMITED | Private company limited by shares | Dissolved |
| SOLARBARN LIMITED | Private company limited by shares | Dissolved |
| SMART SOURCE LAND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SONIC ELECTRONICS INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG FAMILY WELFARE SOCIETY | Company limited by guarantee | Live |
| SOLID ELECTRONIC INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SOMECK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOTHBY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOVONOTS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SOCIETY OF DENTAL TECHNICIANS LIMITED -THE- | Company limited by guarantee | Dissolved |
| MCGILL SOCIETY OF HONG KONG LIMITED -THE- | Company limited by guarantee | Live |
| SOLARPOL MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOPAZ TIME LIMITED | Private company limited by shares | Dissolved |
| KAI FATHER & SONS ENTERPRISES LIMITED | Private company limited by shares | Live |
| SAVE & SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUTHEAST ASIA PROPERTIES & FINANCE (EXCHANGE) LIMITED | Private company limited by shares | Dissolved |
| ALBERT AND SONS INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| SOVCOTTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| LOGIC AND SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SOLARWAY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOHNEY COMPANY LIMITED | Private company limited by shares | Live |
| SOLID PACIFIC FINANCE LIMITED | Private company limited by shares | Live |
| SOON LEE REALTY LIMITED | Private company limited by shares | Live |