| Amplitude Modulation | AM |
| Announcement in the Public Interest | API |
| Asia Africa Europe-1 | AAE-1 |
| Asia-America Gateway Cable System | AAG |
| Asia Direct Cable System | ADC |
| Asia Pacific Cable Network 2 | APCN-2 |
| Asia Pacific Gateway | APG |
| Asia Submarine-Cable Express | ASE |
| Broadcasting Codes of Practice | CoPs |
| Broadcasting (Miscellaneous Provisions) Ordinance (Cap. 391) | B(MP)O |
| Broadcasting Ordinance (Cap. 562) | BO |
| Chief Executive in Council | CE in C |
| Commercial Electronic Message | CEM |
| Communications Authority | The Authority |
| Communications Authority Ordinance (Cap. 616) | CAO |
| Competition Commission | Commission |
| Competition Ordinance (Cap. 619) | CO |
| Consumer Education Campaign | Campaign |
| Customer Complaint Settlement Scheme | CCSS |
| Customs and Excise Department | C&ED |
| Director-General of Communications | DG Com |
| District Anti-Phone Deception Ambassadors | Ambassadors |
| District Anti-Phone Deception Ambassador Scheme | Ambassador Scheme |
| District Council | DC |
| Domestic Free Television Programme Service | Free TV |
| Domestic Pay Television Programme Service | Pay TV |
| Do-Not-Call | DNC |
| Enhanced Industry Regulatory Scheme for Marketing Calls | Enhanced Industry Scheme |
| Fifth Generation | 5G |
| Fixed Network Operator | FNO |
| FLAG North Asia Loop | FNAL |
| Fourth Generation | 4G |
| Frequency Modulation | FM |
| Gigabits per second | Gbps |
| Guidelines on Implementation of Real-name Registration for SIM Cards | RNR Guidelines |
| Guidelines on Work near Underground Telecommunications Lines | UTL Guidelines |
| Hainan to Hong Kong Express | H2HE |
| High Definition Television | HDTV |
| HK Television Entertainment Company Limited | HKTVE |
| HKT Trust and HKT Limited | HKT |
| Hong Kong Commercial Broadcasting Company Limited | CRHK |
| Hong Kong Identity Card | HKID |
| Hong Kong Police Force | Police |
| i-CABLE HOY Limited | i-CABLE HOY |
| International Mobile Telecommunications | IMT |
| Legislative Council | LegCo |
| Low-altitude Economy | LAE |
| Low Earth Orbit | LEO |
| Megabits per second | Mbps |
| Memorandum of Understanding | MoU |
| Metro Broadcast Corporation Limited | Metro |
| Mobile Network Operator | MNO |
| Mobile Virtual Network Operator | MVNO |
| National Security Law | NSL |
| Non-domestic Television Programme Service | Non-domestic TV |
| Now TV Limited | Now TV |
| Office of the Communications Authority | OFCA |
| Other Licensable Television Programme Service | Other Licensable TV |
| Phoenix Satellite Television Company Limited | Phoenix Satellite TV |
| Pre-paid SIM | PPS |
| Protection of Critical Infrastructures (Computer Systems) Ordinance (Cap. 653) | CIO |
| Public Radiocommunications Service | PRS |
| Radio Base Station | RBS |
| Radio Television Hong Kong | RTHK |
| REACH North Asia Loop | RNAL |
| Real-name Registration Programme for SIM Cards | RNR Programme |
| Secretary for Commerce and Economic Development | SCED |
| Services-based Operator | SBO |
| Sixth Generation | 6G |
| SMS Sender Registration Scheme | Scheme |
| South-East Asia Japan Cable System | SJC |
| Telecommunications Ordinance (Cap. 106) | TO |
| Telecommunications (Registration of SIM Cards) Regulation (Cap. 106AI) | Registration Regulation |
| Telecommunications Service Provider | TSP |
| Television Broadcasts Limited | TVB |
| TGN-Intra Asia Cable System | TGN-IA |
| Trade Descriptions Ordinance (Cap. 362) | TDO |
| Unified Carrier Licence | UCL |
| Universal Service Contribution | USC |
| Universal Service Obligation | USO |
| Universal Service Provider | USP |
| Unmanned Aircraft System | UAS |
| Unsolicited Electronic Messages Ordinance (Cap. 593) | UEMO |
| Wireless Internet of Things | WIoT |
| Working Group on Developing LAE | LAE Working Group |
| Working Group on Tackling Fraudulent Calls and Messages by the Telecommunications Industry | Working Group |