| ARENA ASIA INVESTMENT LIMITED | Private company limited by shares | Live |
| Kidult Arena Limited | | Live |
| Arena Land Investment Limited | | Live |
| Arena Living HK Limited | Private company limited by shares | Live |
| ARENA LOGISTICS LIMITED | Private company limited by shares | Live |
| ARENA MANAGEMENT LIMITED | Private company limited by shares | Live |
| Arena Media Limited | Private company limited by shares | Live |
| ORIENTAL ARENA LIMITED | Private company limited by shares | Live |
| ARENA PACIFIC LIMITED | Private company limited by shares | Live |
| ARENA ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| PopTV Arena Limited | Private company limited by shares | Dissolved |
| Arena Power Limited | Private company limited by shares | Live |
| Prodigy Arena Limited | Private company limited by shares | Live |
| ARENA PRODUCTIONS LIMITED | Private company limited by shares | Live |
| Arena Professional Translation Limited | Private company limited by shares | Live |
| ARENA PROPERTIES LIMITED | Private company limited by shares | Live |
| ARENA CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| ARENA SCIENTIFIC LIMITED | Private company limited by shares | Live |
| ARENA SECRETARIES LIMITED | Private company limited by shares | Live |
| Sparkle Arena Enterprises Limited | Private company limited by shares | Live |
| Sport Arena Company Limited | | Live |
| Arena Strength Limited | Private company limited by shares | Live |
| ARENA STUDIO LIMITED | | Live |
| ARENA TACTICS STUDIO LIMITED | Private company limited by shares | Dissolved |
| ARENA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ARENA TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Thunder Arena & Technical Consultancy Limited | Private company limited by shares | Live |
| ARENA TOYS LIMITED | Private company limited by shares | Dissolved |
| ARENA TRADING LIMITED | Private company limited by shares | Dissolved |
| Arena Trading Limited | | Live |
| ARENA GENERAL TRADING LIMITED | Private company limited by shares | Dissolved |
| ARENA TRAVEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WORLD ARENA LIMITED | Private company limited by shares | Live |
| World Class Arena Asia Limited | Company limited by guarantee | Live |
| ARENA WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| ARENA WORLDWIDE LIMITED | Private company limited by shares | Live |
| ARENAL LIMITED | Private company limited by shares | Live |
| Arenal (Asia) Limited | | Live |
| ARENALES LIMITED | Private company limited by shares | Live |
| ARENAS INVESTMENTS LIMITED | Private company limited by shares | Live |
| ARENDAL LIMITED | Private company limited by shares | Dissolved |
| ARENDAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ARENDAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ARENDAL MANUFACTURING CO. LIMITED | Private company limited by shares | Dissolved |
| ARENDEE LIMITED | Private company limited by shares | Live |
| ArendInsights Limited | Private company limited by shares | Live |
| BELGIUM ARENDONK ANIMAL HEALTH TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| ARENEGENE LIMITED | Private company limited by shares | Dissolved |
| Arenex HK Limited | Private company limited by shares | Live |
| Arenfire (HK) Limited | | Live |
| ARENGA COMPANY LIMITED | Private company limited by shares | Dissolved |
| ARENOVA LIMITED | | Live |
| ARENS AUTOMATION COMPANY LIMITED | Private company limited by shares | Live |
| ARENSEAN SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Arensio Limited | Private company limited by shares | Live |
| ARENSTONE ESTATES LIMITED | Private company limited by shares | Live |
| Aren't Limited | Private company limited by shares | Live |
| ARENT PROPERTIES LIMITED | Private company limited by shares | Live |
| A.R.Enterprises Limited | | Live |
| ARENTHON LIMITED | Private company limited by shares | Dissolved |
| ARENX LIMITED | Private company limited by shares | Live |