| TETRA LIMITED | Private company limited by shares | Live |
| TETRA INC LIMITED | Private company limited by shares | Live |
| TETRA X LIMITED | Private company limited by shares | Live |
| TETRA ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| TETRA Architects & Planners Limited | Private company limited by shares | Live |
| TETRA (ASIA) LIMITED | Private company limited by shares | Live |
| TETRA BYTE SOLUTION HK LIMITED | Private company limited by shares | Live |
| TETRA CARGO LIMITED | Private company limited by shares | Live |
| TETRA PAK CHINA LIMITED | Private company limited by shares | Live |
| TETRA CHINA LIMITED | Private company limited by shares | Dissolved |
| TETRA INTERNATIONAL (CHINA) LIMITED | Private company limited by shares | Dissolved |
| TETRA INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| TETRA NUTRITIONAL CONSULTATION CENTRE COMPANY LIMITED | Private company limited by shares | Live |
| Tetra Design Co. Limited | | Live |
| TETRA DESIGN CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| TETRA PAK EAST ASIA LIMITED | Private company limited by shares | Dissolved |
| Tetra Engineering Company Limited | Private company limited by shares | Live |
| TETRA FINANCE (HK) LIMITED | Private company limited by shares | Dissolved |
| TETRA STRATEGIC GROUP LIMITED | Private company limited by shares | Live |
| Tetra International (Holding) Limited | Private company limited by shares | Live |
| TETRA PACIFIC (HOLDING) LIMITED | Private company limited by shares | Live |
| TETRA INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TETRA Investments Co. Limited | Private company limited by shares | Live |
| TETRA WORLD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Tetra Machinery Company Limited | Private company limited by shares | Live |
| TETRA INVESTMENT AND MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| TETRA NEON EXCHANGE LIMITED | Company limited by guarantee | Live |
| Tetra Pacific Company Limited | Private company limited by shares | Live |
| TETRA POWER LIMITED | Private company limited by shares | Dissolved |
| TETRA CHROMA PRINTING & DESIGNING LIMITED | Private company limited by shares | Dissolved |
| TETRA RESOURCES LIMITED | Private company limited by shares | Live |
| TETRA SMART CO LIMITED | | Live |
| TETRA BUSINESS SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Tetra Sourcing Limited | Private company limited by shares | Live |
| TETRA TECHNOLOGI HK LIMITED | Private company limited by shares | Live |
| TETRA TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TETRA TRADING LIMITED | Private company limited by shares | Dissolved |
| TETRACORE COMPANY LIMITED | Private company limited by shares | Dissolved |
| TETRADE PAPER COMPANY LIMITED | Private company limited by shares | Live |
| TETRADIC INTERNATIONAL LIMITED | | Live |
| Tetradium Capital Limited | Private company limited by shares | Live |
| TETRADOM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TetraEcopak Hong Kong Limited | Private company limited by shares | Live |
| Tetraedris Limited | Private company limited by shares | Live |
| TETRAGENIC LIMITED | Private company limited by shares | Dissolved |
| TETRAGON LIMITED | Private company limited by shares | Dissolved |
| Tetragon Limited | Private company limited by shares | Live |
| TETRAHEDRAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| TETRAHEDRON LIMITED | Private company limited by shares | Live |
| TETRAHEDRON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TETRAK Resources Limited | Private company limited by shares | Dissolved |
| TETRALUX LIMITED | Private company limited by shares | Live |
| Tetramer Limited | Private company limited by shares | Live |
| TETRA-PRO SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Tetrastars Limited | Private company limited by shares | Live |
| TetraTech Limited | Private company limited by shares | Live |
| TETRATONIC LIMITED | Private company limited by shares | Dissolved |
| CLARKSON, TETRAULT AND KWAN LIMITED | Private company limited by shares | Dissolved |
| Tetrax Management Limited | Private company limited by shares | Live |