| CHINESE OCEANAUTS' INSTITUTE LIMITED | Private company limited by shares | Live |
| ORIENTAL DANOLOGY INSTITUTE (ODI) LIMITED | Private company limited by shares | Live |
| OSHO Energy Transformation Institute (OETI) Limited | Private company limited by shares | Live |
| ASIAN FAMILY OFFICE RESEARCH INSTITUTE LIMITED | | Live |
| Family Office Institute Limited | Private company limited by shares | Live |
| OLES Institute Limited | | Live |
| OMAN TUO ROOM CULTURE INSTITUTE LIMITED | Private company limited by shares | Live |
| Asian Institute of Oncology Limited | Private company limited by shares | Live |
| One-belt-one-Road Industry Business Institute Co., Limited | Private company limited by shares | Live |
| Oneness Concept Institute Limited | Private company limited by shares | Dissolved |
| INSTITUTE OF CHINESE OPERA ARTS LIMITED | Company limited by guarantee | Dissolved |
| Hong Kong Institute of Cantonese Opera Limited | Private company limited by shares | Live |
| Institute of Public Opinion Survey Limited | Company limited by guarantee | Live |
| CHINA ORATORY INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CHINA ORFF INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA ORGANIC SELENIUM RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| AUSTRALIA MARINE ORGANISM RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| ORGANIZATION MANAGEMENT RESEARCH INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL ZEN AESTHETIC ART INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA ORIENTAL BUDDHISM CULTURE INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL INSTITUTE CAPITAL LIMITED | Private company limited by shares | Live |
| CHINA ORIENTAL ETIQUETTE INSTITUTE LIMITED | Private company limited by shares | Live |
| China Oriental Women Institute Limited | Private company limited by shares | Live |
| INSTITUTE OF ORIENTAL CLAIRVOYANCE LIMITED -THE- | Private company limited by shares | Live |
| Oriental Elegance Research Institute Limited | Private company limited by shares | Live |
| Institute of Oriental Lifeology Limited -The- | Private company limited by shares | Live |
| Institute of Oriental psychology Limited | Private company limited by shares | Live |
| CHINA INSTITUTE OF ORIENTALISM LIMITED | Private company limited by shares | Live |
| CHINESE ORTHODONTIC RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| Chinese Orthodontic Research Institute Limited | | Live |
| Oscar and Thomas Learning Institute Limited | Private company limited by shares | Live |
| FRANCE OULAIXUEFU (INT'L) SKIN INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA OUTDOOR ADVERTISING RESEARCH INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CHINA OUYANG CONG CULTURE RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| OVERSEAS BUSINESS INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| China overseas inverstment research institute Limited | Private company limited by shares | Live |
| China Overseas Security Research Institute Limited | Private company limited by shares | Live |
| China Overseas Education Research Institute Co Limited | | Live |
| Chinese Enterprises Overseas Investment Institute Limited | Private company limited by shares | Live |
| TSINGHAU UNIVERSITY (OVERSEAS) RESEARCH INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CHINESE WUSHU OVERSEAS TRAINING INSTITUTE LIMITED | Private company limited by shares | Live |
| PACATA INSTITUTE OF EDUCATION LIMITED | Private company limited by shares | Live |
| PACIFIC INSTITUTE LIMITED -THE- | Private company limited by shares | Dissolved |
| ASIA PACIFIC M & A INSTITUTE LIMITED | Private company limited by shares | Live |
| Asia Pacific Institute Limited | Private company limited by shares | Live |
| ASIA PACIFIC INSTITUTE OF FINANCE LIMITED | Private company limited by shares | Live |
| Asia Pacific Strategic Institute Limited | Private company limited by shares | Live |
| Asia Pacific Institute for Strategy Limited | Company limited by guarantee | Live |
| PACIFIC RIM INSTITUTE OF COMPARATIVE ECONOMIC STUDIES (PRICES) LIMITED | Company limited by guarantee | Dissolved |
| ASIA PACIFIC INTERNATIONAL JOINT RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| INSTITUTE OF PACIFIC-RIM BUSINESS AND POLICY RESEARCH LIMITED | Company limited by guarantee | Dissolved |
| China Zen Buddhism Painting And Calligraphy Art Institute Limited | Private company limited by shares | Live |
| China Buddhist Painting and Calligraphy Institute Company Limited | Private company limited by shares | Live |
| China Ink Painting and Calligraphy Institute Limited | Private company limited by shares | Live |
| CHINA ZEN PAINTING AND CALLIGRAPHY INSTITUTE LIMITED | Private company limited by shares | Live |
| HK CHINA PAINTING AND CALLIGRAPHY INSTITUTE CO., LIMITED | Private company limited by shares | Dissolved |
| CHINA CROSS-STRAIT PAINTING AND CALLIGRAPHY INSTITUTE COMPANY LIMITED | Private company limited by shares | Dissolved |
| China Fengshui Painting and Calligraphy Institute Limited | | Live |
| CHINA PAINTING AND CALLIGRAPHY INSTITUTE GROUP LIMITED | Private company limited by shares | Live |
| CHINA LANTING PAINTING CALLIGRAPHY INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| China Loving Painting And Calligraphy Institute Limited | Private company limited by shares | Live |
| CHINA PAINTING & CALLIGRAPHY RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA YANHUANG CALLIGRAPHY & PAINTING INSTITUTE ART LIMITED | Private company limited by shares | Live |
| CHINA CELEBRITY PAINTING AND CALLIGRAPHY INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CHINA PAINTING INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA PAINTING & CALLIGRAGHY RESEARCH INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| CHINA NEW CHINA PAINTING ART RESEARCH INSTITUTE CO., LIMITED | Private company limited by shares | Live |
| China Ink Painting Research Institute Co., Limited | Private company limited by shares | Live |
| CHINA FINGER PAINTING RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA ZEN PAINTING RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| China TieShan Art Institute of Inner Painting & Company Limited | Private company limited by shares | Live |
| Chinese Native Painting Institute Limited | Private company limited by shares | Live |
| CHINESE PAINTING ART RESEARCH INSTITUTE COMPANY LIMITED | Private company limited by shares | Live |
| CHINA LANDSCAPE PAINTING INSTITUTE CO., LIMITED | Private company limited by shares | Live |
| China Gongbi Painting Research Institute Limited | Private company limited by shares | Live |
| China Literature & Art Painting Institute Limited | Private company limited by shares | Live |
| CHINA INK PAINTING ARTISTS RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA SANBAI PAINTING AND CALLIGRAPHY RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| PANMEDIA INSTITUTE LIMITED | Company limited by guarantee | Live |
| Institute of Accredited Para-Accountants Limited | Company limited by guarantee | Dissolved |
| INSPIRATION PARADISE LEARNING INSTITUTE LIMITED | Private company limited by shares | Live |
| HK Parenting International Institute Limited | Private company limited by shares | Live |
| China Yi Fang Parents Education Institute Limited | Private company limited by shares | Live |
| Construction Participants Safety Institute Company Limited | | Live |
| POK & PARTNERS INTERNATIONAL DESIGN INSTITUTE LIMITED | Private company limited by shares | Live |
| Hong Kong Institute of Patent Attorneys Limited | Company limited by guarantee | Live |
| HONG KONG INSTITUTE OF PATENT PRACTITIONERS LIMITED -THE- | Company limited by guarantee | Live |
| INSTITUTE OF PATENTEES, INVENTORS AND DESIGNERS LIMITED | Company limited by guarantee | Dissolved |
| PathBuilder Learning Institute Co., Limited | Private company limited by shares | Live |
| INTERNATIONAL PEACE FOREIGN POLICY RESEARCH INSTITUTE LIMITED | Private company limited by shares | Dissolved |
| PEARL INSTITUTE LIMITED | Company limited by guarantee | Live |
| BRIGHT PEARL BUDDHIST INSTITUTE -THE- | Company limited by guarantee | Live |
| PEARL POWER RESEARCH INSTITUTE LIMITED | | Live |
| PEARL RIVER INSTITUTE COMPANY LIMITED | Company limited by guarantee | Live |
| INSTITUTE OF LINGNAN PENJING HONG KONG LIMITED | Company limited by guarantee | Live |
| Business Institute of Pennsylvania Co., Limited | Private company limited by shares | Live |
| PENTIUM BIOPHARMACEUTICAL INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINESE PEPTIDE INSTITUTE LIMITED | Private company limited by shares | Live |
| CHINA PERFORMANCE RESEARCH INSTITUTE LIMITED | Private company limited by shares | Live |
| Jockey Performance Institute Limited | | Live |