Countries
All countries which are Members of the United Nations may become members of WHO by accepting its Constitution. Other countries may be admitted as members when their application has been approved by a simple majority vote of the World Health Assembly.
Territories which are not responsible for the conduct of their international relations may be admitted as Associate Members upon application made on their behalf by the Member or other authority responsible for their international relations. Members
of WHO are grouped according to regional distribution (194 Member States).
A
B
C
D
M
N
O
Q
S
- Saint Kitts and Nevis
- Saint Lucia
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Sweden
- Switzerland
- Syrian Arab Republic
T
U
Y
* In 2025, the United Nations Secretary General, as depository of the WHO Constitution, circulated a notification from the United States of America of its intention to withdraw from the World Health Organization, with a stated effective date of 22 January 2026. This notification is pending consideration by WHO’s governing bodies. References to the United States of America within the WHO context, including any display or otherwise of its national flag or insignia, should be understood as subject to, and without prejudice to, such consideration by WHO’s governing bodies.