| O | Gas Safety Appeal Board Panel (GSABP) | Others | |
| O | Gastroenterology and Hepatology Subspecialty Group, Hospital Authority, Hong Kong | Others | |
| O | Gastrointestinal Cancer, Clinical Co-ordinating Committee (Clinical Oncology) Site-Specific Expert Advisory Groups, Hospital Authority, Hong Kong | Others | |
| O | GD/HK Expert Group on Co-operation in Informatisation | Others | |
| O | General Association of Jiangsu Province in Hong Kong | Others | |
| O | General Committee of Hong Kong Association for Testing, Inspection and Certification Limited | Professional | |
| O | General Committee, Hong Kong Geological Society | Others | |
| O | General Education Committee, Shaw College, CUHK | Others | |
| O | General Grades Office, Government Secretariat, HKSAR | Others | |
| J | General Guidelines for Drug Uses | | |
| O | General Medical Council, United Kingdom | Professional | |
| O | General Practice Branch of China Association for Promotion of International Exchange of Medical Care | Others | |
| P | General Research Fund and the Early Career Scheme for 2012-2013 exercise f the Research Grants Council (RGC), Hong Kong | | |
| O | General Research Fund, Research Grants Council, University Grants Committee | Others | |
| O | General Surgery Board, The College of Surgeons of Hong Kong | Others | |
| O | Genetic and Genomic Speciality Board, Hong Kong College of Pathologists | Others | |
| O | Genetic Test Formulary Scientific Committee, Hospital Authority | Others | |
| O | Genetics and Genomic working Group, Education Committee, Hong Kong Academy of Medicine | Others | |
| J | Geographical Education | | |
| O | Geography Curriculum / New Senior Secondary School Curriculum | Others | |
