| Name | College | Chapter | Registered Specialty | |
|---|---|---|---|---|
| Ngui William Paul | College of Psychiatrists | Psychiatry | ||
| Ngui Tet Shin, Francis | College of Psychiatrists | Psychiatry | ||
| Nicholas J Talley | ||||
| Niduvaje Krishnamoorthy | College of Paediatrics and Child Health | Chapter of Neonatologists | Paediatric Medicine, Neonatology | |
| Nieh Chih Ming | College of Physicians | Chapter of Geriatricians | Geriatric Medicine | |
| Nikam Milind Digamber | College of Physicians | Chapter of Renal Physicians | Renal Medicine | |
| Noor Hafizah Bte Ismail | College of Physicians | Chapter of Geriatricians | Geriatric Medicine | |
| Dato' Syed Mohd Noori | ||||
| Nopadol Wora-Urai | ||||
| Nor Azhari Bin Mohd Zam | College of Surgeons | Chapter of Urologists | Urology | |
| Norsidah Abdul Manap | ||||
| Maria Noviani | College of Physicians | Chapter of Rheumatologists | Rheumatology | |
| Nyo Yoke Lin | College of Surgeons | Chapter of Paediatric Surgeons | Paediatric Surgery | |
| Ochi Harumi | College of Physicians | Chapter of Dermatologists | Dermatology | |
| Odattil Geetha | College of Paediatrics and Child Health | Chapter of Neonatologists | Paediatric Medicine, Neonatology | |
| Barry O'Donnell | ||||
| Oehlers Farleigh Arthur Charles | College of Dental Surgeons | |||
| Oei Ley Elizabeth | College of Physicians | Chapter of Renal Physicians | Renal Medicine | |
| Oen Tuck Soon, Francis | College of Ophthalmologists | Ophthalmology | ||
| Nicodemus Edrick Oey | College of Physicians | Chapter of Rehabilitation Physicians | Rehabilitation Medicine | |
| Oh Jean Yin | College of Paediatrics and Child Health | Paediatric Medicine | ||
| Oh Chia Chiang Derrick | College of Surgeons | Chapter of Orthopaedic Surgeons, Section of Sports Physicians | Orthopaedic Surgery, Sports Medicine | |
| Oh Choon Chiat | College of Physicians | Chapter of Dermatologists | Dermatology | |
| Oh Han Boon | College of Surgeons | Chapter of General Surgeons | General Surgery | |
| Oh Yoong Leong Jacob | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery |