At its launch at The Hague on 25 November 2002, the HCoC was signed by 93 states. There are now 143 subscribing states:
Afghanistan
Albania
Andorra
Antigua and Barbuda
Argentina
Armenia
Australia
Austria
Azerbaijan
Belarus
Belgium
Benin
Bosnia and Herzegovina
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Canada
Cabo Verde
Central African Republic
Chad
Chile
Colombia
Comoros
Congo
Cook Islands
Costa Rica
Croatia
Cyprus
Czech Republic
Denmark
Dominica
Dominican Republic
Ecuador
El Salvador Equatorial Guinea
Eritrea
Estonia
Ethiopia
Fiji
Finland
France
Gabon
Gambia
Georgia
Germany
Ghana
Greece
Guatemala
Guinea
Albania
Andorra
Antigua and Barbuda
Argentina
Armenia
Australia
Austria
Azerbaijan
Belarus
Belgium
Benin
Bosnia and Herzegovina
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Canada
Cabo Verde
Central African Republic
Chad
Chile
Colombia
Comoros
Congo
Cook Islands
Costa Rica
Croatia
Cyprus
Czech Republic
Denmark
Dominica
Dominican Republic
Ecuador
El Salvador Equatorial Guinea
Eritrea
Estonia
Ethiopia
Fiji
Finland
France
Gabon
Gambia
Georgia
Germany
Ghana
Greece
Guatemala
Guinea
Guinea-Bissau
Guyana
Haiti
Holy See
Honduras
Hungary
Iceland
India
Iraq
Ireland
Italy
Japan
Jordan
Kazakhstan
Kenya
Kiribati
Latvia
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Madagascar
Malawi
Maldives
Mali
Malta
Marshall Islands
Mauritania
Micronesia (Federated States of)
Monaco
Mongolia
Montenegro
Morocco
Mozambique
Netherlands
New Zealand
Nicaragua
Niger
Nigeria
North Macedonia
Norway
Palau
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Poland
Portugal
Republic of Korea
Guyana
Haiti
Holy See
Honduras
Hungary
Iceland
India
Iraq
Ireland
Italy
Japan
Jordan
Kazakhstan
Kenya
Kiribati
Latvia
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Madagascar
Malawi
Maldives
Mali
Malta
Marshall Islands
Mauritania
Micronesia (Federated States of)
Monaco
Mongolia
Montenegro
Morocco
Mozambique
Netherlands
New Zealand
Nicaragua
Niger
Nigeria
North Macedonia
Norway
Palau
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Poland
Portugal
Republic of Korea
Republic of Moldova
Romania
Russian Federation
Rwanda
Saint Kitts and Nevis
Saint Vincent and the Grenadines
Samoa
San Marino
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Somalia
South Africa
Spain
Sudan
Suriname
Sweden
Switzerland
Tajikistan
Timor-Leste
Togo
Tonga
Tunisia
Turkey
Turkmenistan
Tuvalu
Uganda
Ukraine
United Kingdom of Great Britain and Northern Ireland
United Republic of Tanzania
United States of America
Uruguay
Uzbekistan
Vanuatu
Venezuela (Bolivarian Republic of)
Zambia
Romania
Russian Federation
Rwanda
Saint Kitts and Nevis
Saint Vincent and the Grenadines
Samoa
San Marino
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Somalia
South Africa
Spain
Sudan
Suriname
Sweden
Switzerland
Tajikistan
Timor-Leste
Togo
Tonga
Tunisia
Turkey
Turkmenistan
Tuvalu
Uganda
Ukraine
United Kingdom of Great Britain and Northern Ireland
United Republic of Tanzania
United States of America
Uruguay
Uzbekistan
Vanuatu
Venezuela (Bolivarian Republic of)
Zambia