| Amplitude Modulation | AM |
| Announcement in the Public Interest | API |
| Broadcasting (Miscellaneous Provisions) Ordinance (Cap. 391) | B(MP)O |
| Broadcasting Ordinance (Cap. 562) | BO |
| Chief Executive in Council | CE in C |
| Class Licence for Offer of Telecommunications Services | CLOTS |
| 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 Registers | DNC Registers |
| External Telecommunications Services | ETS |
| Fantastic Television Limited | Fantastic TV |
| Fifth Generation | 5G |
| Fixed Network Operators | FNOs |
| Fourth Generation | 4G |
| Frequency Modulation | FM |
| Gigabits per second | Gbps |
| Guidelines for Administration of CLOTS | CLOTS Guidelines |
| 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 |
| Hutchison Telephone Company Limited | Hutchison |
| IDD1628 Limited | IDD1628 |
| Internet of Things | IoT |
| Local Access Charge | LAC |
| Localised Wireless Broadband Service Licence | LWBS Licence |
| Localised Wireless Broadband System (Private) Licence | LWBS (Private) Licence |
| Megabits per second | Mbps |
| Memorandum of Understanding | MoU |
| Metro Broadcast Corporation Limited | Metro |
| Mobile Network Operator | MNO |
| Mobile Virtual Network Operator | MVNO |
| 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 |
| PCCW Media Limited | PCCW Media |
| Public Radiocommunications Service | PRS |
| Radio Base Stations | RBSs |
| Radio Television Hong Kong | RTHK |
| Real-name Registration Programme for SIM Cards | Real-name Registration Programme |
| Second Generation (Mobile Services/Subscriptions) | 2G (Mobile Services/Subscriptions) |
| Secretary for Commerce and Economic Development | SCED |
| Services-based Operator | SBO |
| Skycall Telecom International Limited | Skycall |
| Spectrum Utilisation Fee | SUF |
| Telecommunications Ordinance (Cap. 106) | TO |
| Telecommunications (Registration of SIM Cards) Regulation | Registration Regulation |
| Television Broadcasts Limited | TVB |
| 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 |