Optional Protocol on the involvement of children in armed conflict
- Algeria
- Angola
- Benin
- Botswana
- Bouvet Island [Norway]
- Burkina Faso
- Burundi
- Cameroon
- Cape Verde
- Central African Republic
- Chad
- Comoros
- Congo, Democratic Republic of the
- Congo, Republic of
- Cote d'Ivoire
- Djibouti
- Egypt
- Equatorial Guinea
- Eritrea
- Ethiopia
- French Southern Territories [France]
- Gabon
- Gambia
- Ghana
- Guinea
- Guinea-Bissau
- Heard Island and McDonald Islands [Australia]
- Kenya
- Lesotho
- Liberia
- Libya
- Madagascar
- Malawi
- Mali
- Mauritania
- Mauritius
- Mayotte [France]
- Morocco
- Mozambique
- Namibia
- Niger
- Nigeria
- Anguilla
- Antigua and Barbuda
- Argentina
- Aruba
- Bahamas
- Barbados
- Belize
- Bermuda
- Bolivia
- Brazil
- Canada
- Cayman Islands
- Chile
- Colombia
- Costa Rica
- Cuba
- Dominica
- Dominican Republic
- Ecuador
- El Salvador
- Falkland Islands (Malvinas)
- French Guiana [France]
- Greenland [Denmark]
- Grenada
- Guadeloupe [France]
- Guatemala
- Guyana
- Haiti
- Honduras
- Jamaica
- Martinique [France]
- Mexico
- Montserrat
- Netherlands Antilles [Netherlands]
- Nicaragua
- Panama
- Paraguay
- Peru
- Puerto Rico
- Saint Kitts and Nevis
- Saint Lucia
- Saint Pierre and Miquelon [France]
- Afghanistan
- Armenia
- Azerbaijan
- Bahrain
- Bangladesh
- Bhutan
- British Indian Ocean Territory [United Kingdom]
- Brunei Darussalam
- Cambodia
- China
- Christmas Island [Australia]
- Cocos (Keeling) Islands
- Georgia
- Hong Kong, Special Administrative Region of China
- India
- Indonesia
- Iran, Islamic Republic of
- Iraq
- Israel
- Japan
- Jordan
- Kazakhstan
- Korea, Democratic People's Republic of
- Korea, Republic of
- Kuwait
- Kyrgyzstan
- Lao People's Democratic Republic
- Lebanon
- Macao Special Administrative Region of China
- Malaysia
- Maldives
- Mongolia
- Myanmar
- Nepal
- Oman
- Pakistan
- Palestinian Territory, Occupied
- Philippines
- Qatar
- Saudi Arabia
- Singapore
- Sri Lanka
- Albania
- Andorra
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Channel Islands [United Kingdom]
- Croatia
- Cyprus
- Czech Republic
- Denmark
- Estonia
- Faroe Islands [Denmark]
- Finland
- France
- Germany
- Gibraltar [United Kingdom]
- Greece
- Holy See
- Hungary
- Iceland
- Ireland
- Isle of Man [United Kingdom]
- Italy
- Kosovo
- Latvia
- Liechtenstein
- Lithuania
- Luxembourg
- Macedonia, the former Yugoslav Republic of
- Malta
- Moldova, Republic of
- Monaco
- Montenegro
- Netherlands
- Northern Ireland [United Kingdom]
- Norway
- Poland
- Portugal
- Romania
- Russian Federation
- American Samoa
- Australia
- Cook Islands [New Zealand]
- Fiji
- French Polynesia [France]
- Guam
- Kiribati
- Marshall Islands
- Micronesia, Federated States of
- Nauru
- New Caledonia [France]
- New Zealand
- Niue [New Zealand]
- Norfolk Islands [Australia]
- Northern Mariana Islands
- Palau
- Papua New Guinea
- Pitcairn
- Samoa
- Solomon Islands
- Tokelau