| 26 GHz and 28 GHz bands | 26/28 GHz bands |
| Amplitude Modulation | AM |
| Announcement in the Public Interest | API |
| Broadcasting (Miscellaneous Provisions) Ordinance (Cap. 391) | B(MP)O |
| Broadcasting Ordinance (Cap. 562) | BO |
| Building Management Office | BMO |
| Chief Executive in Council | CE in C |
| Commerce and Economic Development Bureau | CEDB |
| Commercial Electronic Message | CEM |
| Communications Authority | The Authority |
| Communications Authority Ordinance (Cap. 616) | CAO |
| Competition Commission | Commission |
| Competition Ordinance (Cap. 619) | CO |
| Customer Complaint Settlement Scheme | CCSS |
| Customs and Excise Department | C&ED |
| Director-General of Communications | DG Com |
| Domestic Free Television Programme Service | Free TV |
| Domestic Pay Television Programme Service | Pay TV |
| Do-Not-Call Register | DNC Register |
| External Telecommunications Service | ETS |
| Fantastic Television Limited | Fantastic TV |
| Fifth Generation | 5G |
| Fixed Network Operator | FNO |
| Fourth Generation | 4G |
| Frequency Modulation | FM |
| Gigabits per second | Gbps |
| Guidelines on Implementation of Real-name Registration for SIM Cards | SIM Guidelines |
| Guidelines on Work near Underground Telecommunications Lines | UTL Guidelines |
| High Definition Television | HDTV |
| HK Television Entertainment Company Limited | HKTVE |
| HKT Trust and HKT Limited | HKT |
| Hong Kong Cable Television Limited | HKCTV |
| Hong Kong Commercial Broadcasting Company Limited | CRHK |
| Hong Kong Police Force | Police |
| Hybrid Fibre Coaxial Cable | HFC |
| IDD1628 Limited | IDD1628 |
| International Private Lease Circuit | IPLC |
| Megabits per second | Mbps |
| Memorandum of Understanding | MoU |
| Metro Broadcast Corporation Limited | Metro |
| Microwave Multipoint Distribution System | MMDS |
| Mid-term Review of the Free TV Licences of Fantastic TV, HKTVE and TVB and the Sound Broadcasting Licences of CRHK and Metro | Mid-term Review |
| Mobile Network Operator | MNO |
| Mobile Virtual Network Operator | MVNO |
| Multibyte Info Technology Limited | Multibyte |
| Non-domestic Television Programme Service | Non-domestic TV |
| Non-ionising Radiation | NIR |
| Office of the Communications Authority | OFCA |
| Other Licensable Television Programme Service | Other Licensable TV |
| Passive Optical Network and Digital Subscriber Line | PON and DSL |
| PCCW Media Limited | PCCW Media |
| Pre-paid SIM | PPS |
| Public Radiocommunications Service | PRS |
| Radio Base Station | RBS |
| Radio Television Hong Kong | RTHK |
| Real-name Registration Programme for SIM Cards | Real-name Registration Programme |
| Second Generation | 2G |
| Secretary for Commerce and Economic Development | SCED |
| Services-based Operator | SBO |
| SmarTone Mobile Communications Limited | SmarTone |
| Spectrum Utilisation Fee | SUF |
| Telecommunications Ordinance (Cap. 106) | TO |
| Telecommunications (Registration of SIM Cards) Regulation (Cap. 106AI) | Registration Regulation |
| Television Broadcasts Limited | TVB |
| Terrestrial Ultra High Frequency | Terrestrial UHF |
| Third Generation | 3G |
| Trade Descriptions Ordinance (Cap. 362) | TDO |
| Ultra Data Technology Limited | Ultra Data |
| Unified Carrier Licence | UCL |
| Universal Service Obligation | USO |
| Universal Service Provider | USP |
| Unsolicited Electronic Messages Ordinance (Cap. 593) | UEMO |
| Wireless Internet of Things | WIoT |
| Wireless Local Area Network | WLAN |
| Working Group on Tackling Fraudulent Calls and Messages by the Telecommunications Industry | The Working Group |